ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package FEATURES AND BENEFITS DESCRIPTION * * * * The ACS732 and ACS733 are a new generation of high bandwidth current sensor ICs from AllegroTM. These devices provide a compact, fast, and accurate solution for measuring high-frequency currents in DC/DC converters and other switching power applications. The ACS732 and ACS733 offer high isolation, high bandwidth Hall-effect-based current sensing with user-configurable overcurrent fault detection. These features make them ideally suited for high-frequency transformer and current transformer replacement in applications running at high voltages. * * * * * * * * * * AEC-Q100 automotive qualified High bandwidth, 1 MHz analog output Differential Hall sensing rejects common-mode fields High-isolation SOIC16 wide body package provides galvanic isolation for high-voltage applications Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design UL60950-1 (ed. 2) certified Dielectric Strength Voltage = 3.6 kVRMS Basic Isolation Working Voltage = 616 VRMS Fast and externally configurable overcurrent fault detection 1 m primary conductor resistance for low power loss and high inrush current withstand capability Options for 3.3V and 5V single supply operation Output voltage proportional to AC and DC current Factory-trimmed sensitivity and quiescent output voltage for improved accuracy Nearly zero magnetic hysteresis Ratiometric output from supply voltage PACKAGE: 16-Pin SOICW (suffix LA) The ACS732 and ACS733 are suitable for all markets, including automotive, industrial, commercial, and communications systems. They may be used in motor control, load detection and management, switch-mode power supplies, and overcurrent fault protection applications. The wide body SOIC-16 package allows for easy implementation. Applied current flowing through the copper conduction path generates a magnetic field that is sensed by the IC and converted to a proportional voltage. Current is sensed differentially in order to reject external common-mode fields. Device accuracy is optimized through the close proximity of the magnetic field to the Hall transducers. A precise, proportional voltage is provided by the Hall IC, which is factory-programmed after packaging for high accuracy. The fully integrated package has an internal copper conductive path with a typical resistance of 1 m, providing low power loss. The current-carrying pins (pins 1 through 8) are electrically isolated from the sensor leads (pins 9 through 16). This allows the devices to be used in high-side current sensing applications without the use of high-side differential amplifiers or other costly isolation techniques. CB Certificate Number: US-23711-A2-UL Continued on next page... Not to scale 1 2 3 IP 4 5 6 7 8 IP+ IP+ ACS732/ ACS733 VCC VCC IP+ VOC IP+ FAULT IP- VIOUT IP- PROGRAM IP- GND IP- GND CBYPASS 16 15 14 13 12 11 CL 10 9 Figure 1: Typical Application Circuit ACS732-33-DS, Rev. 18 MCO-0000316 RF(PULLUP) ACS732/ACS733 outputs an analog signal, VIOUT, that changes proportionally with the bidirectional AC or DC primary sensed current, IP, within the specified measurement range. The overcurrent threshold may be set with a resistor divider tied to the VOC pin. June 29, 2020 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package DESCRIPTION (continued) The ACS732 and ACS733 are provided in a small, low profile, surface-mount SOIC-16 wide-body package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the device is lead-free. These devices are fully calibrated prior to shipment from the Allegro factory. SELECTION GUIDE Part Number Optimized Range, IP (A) Sensitivity [1], Sens(Typ) (mV/A) ACS732KLATR-20AB-T 20 100 ACS732KLATR-40AB-T 40 50 ACS732KLATR-65AB-T 65 30 ACS732KLATR-65AU-T 65 60 ACS732KLATR-75AB-T 75 26.6 ACS733KLATR-20AB-T 20 66 ACS733KLATR-20AB-T-H [3] 20 66 ACS733KLATR-40AB-T 40 33 ACS733KLATR-40AU-T 40 66 ACS733KLATR-65AB-T 65 20 Nominal Supply Voltage, VCC, (V) TA (C) Packing [2] -40 to 125 Tape and reel, 1000 pieces per reel 5.0 3.3 Measured at Nominal Supply Voltage, VCC. Contact Allegro for additional packing options. [3] -H denotes 100% cold calibration at the Allegro factory for improved accuracy. [1] [2] Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 2 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Units Supply Voltage VCC 6 V Reverse Supply Voltage VRCC -0.1 V Output Voltage VIOUT 6 V Reverse Output Voltage VRIOUT -0.1 V Fault Output Voltage VFAULT 6 V Reverse Fault Output Voltage VRFAULT -0.1 V Forward VOC Voltage VVOC 6 V Reverse VOC Voltage VVOC Output Current IOUT Maximum survivable sink or source current on the output Maximum Continuous Current ICMAX TA = 25C 55 A TA Range K -40 to 125 C TJ(max) 165 C Tstg -65 to 170 C Nominal Operating Ambient Temperature Maximum Junction Temperature Storage Temperature -0.1 V 15 mA ESD RATINGS Value Unit Human Body Model Characteristic Symbol VHBM Per AEC-Q100 Test Conditions 12 kV Charged Device Model VCDM Per AEC-Q100 1 kV ISOLATION CHARACTERISTICS Characteristic Symbol Dielectric Surge Strength Test Voltage VSURGE Dielectric Strength Test Voltage Working Voltage for Basic Isolation Notes Value Units Tested 5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2s (rise) / 50s (width). 10000 V VISO Agency type-tested for 60 seconds per UL 60950-1 (edition2). Production Tested at 2250 VRMS per UL 60950-1. 3600 VRMS VWVBI Maximum approved working voltage for basic (single) isolation according to UL 60950-1 (edition 2). 870 VPK or VDC 616 VRMS Clearance DCL Minimum distance through air from IP leads to signal leads. 7.5 mm Creepage DCR Minimum distance along package body from IP leads to signal leads. 7.5 mm Distance Through Insulation DTI Minimum internal distance through insulation 38 m Comparative Tracking Index CTI Material Group II 400 to 599 V THERMAL CHARACTERISTICS[1] Characteristic Symbol Test Conditions Value Unit Junction-to-Ambient Thermal Resistance RJA Mounted on the Allegro ASEK732/3 evaluation board. Performance values include the power consumed by the PCB. [2] 17 C/W Junction-to-Lead Thermal Resistance RJL Mounted on the Allegro ASEK732/3 evaluation board. [2] 5 C/W [1] [2] Refer to the die temperature curves versus DC current plot (p. 29). Additional thermal information is available on the Allegro website. The Allegro evaluation board has 1500 mm2 of 2 oz. copper on each side, connected to pins 1 through 4 and pins 5 through 8, with thermal vias connecting the layers. Performance values include the power consumed by the PCB. Further details on the board are available from the Frequently Asked Questions document on our website. Further information about board design and thermal performance also can be found in the Applications Information section of this datasheet. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 3 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package PINOUT DIAGRAM AND TERMINAL LIST TABLE IP+ 1 16 VCC IP+ 2 15 VCC IP+ 3 14 VOC IP+ 4 13 FAULT IP- 5 12 VIOUT IP- 6 11 PROGRAM IP- 7 10 GND IP- 8 9 GND Package LA, 16-Pin SOICW Pinout Diagram Terminal List Table Number Name 1,2,3,4 IP+ Positive terminals for current being sensed; fused internally. Description 5,6,7,8 IP- Negative terminals for current being sensed; fused internally. 9,10 GND 11 PROGRAM 12 VIOUT Analog output signal. 13 FAULT Overcurrent Fault output. Open drain. 14 VOC Set the overcurrent fault threshold via external resistor divider on this pin. 15,16 VCC Device power supply terminal. Device ground terminal. Programming input pin for factory calibration. Connect to ground for best ESD performance. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 4 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package FUNCTIONAL BLOCK DIAGRAM VCC VCC DIGITAL SYSTEM POR To All Subcircuits Dynamic Trim Compensation Logic Temperature Sensor EEPROM and Control Logic PROGRAM Programming Control FAULT Fault Filtering Logic Hall Driver Fault Trim VOC IP+ Hall Sensor Array Offset Trim Sensitivity Trim Analog Filters VIOUT IP- GND GND Figure 2: Functional Block Diagram Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 5 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package COMMON ELECTRICAL CHARACTERISTICS: Over full range of TA, over supply voltage range VCC(MIN) through VCC(MAX) of a sensor variant, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Supply Voltage VCC Supply Current ICC Bypass Capacitor[2] CBYPASS Test Conditions Min. Typ. [1] Max. Unit ACS732 4.75 5.0 5.25 V ACS733 3.14 3.3 3.46 V ACS732; VCC = 5.0 V - 24 35 mA ACS733; VCC = 3.3 V - 20 35 mA 0.1 - - F Output Capacitance Load CL VIOUT to GND - - 220 pF Output Resistive Load RL VIOUT to GND VSAT(HIGH) Output Saturation Voltage VSAT(LOW) Primary Conductor Resistance Primary Hall Coupling Factor Secondary Hall Coupling Factor VCC to GND 50 - - k VCC = 5.0 V, TA = 25C, RL(PULLDOWN) = 50 k to GND VCC - 0.3 - - V VCC = 3.3 V, TA = 25C, RL(PULLDOWN) = 50 k to GND VCC - 0.3 - - V VCC = 5.0 V, TA = 25C, RL(PULLDOWN) = 50 k to VCC - - 0.5 V VCC = 3.3 V, TA = 25C, RL(PULLDOWN) = 50 k to VCC - - 0.3 V RIP TA = 25C - 1 - m CF(P) TA = 25C - 10.8 - G/A G/A CF(s) TA = 25C - 2.4 - Sensmatch TA = 25C - 1 - % Power On Delay Time tPOD TA = 25C - 180 - s Internal Bandwidth BW Hall Plate Sensitivity Matching Rise Time [3] Response Time [3] Small signal -3dB; CL = 220 pF - 1 - MHz tr TA = 25C, CL = 0.22 nF - 0.7 - s tRESPONSE TA = 25C, CL = 0.22 nF - 0.2 - s Propagation Delay Time [3] tpd TA = 25C, CL = 0.22 nF - 0.14 - s Output Slew Rate SR TA = 25C, CL = 0.22 nF Zero Current Output Ratiometry Error Sensitivity Ratiometry Error Ratiometry Bandwidth Noise Density - 3.2 - V/s ERAT(Q) TA = 25C, VCC = 5 % variation of nominal supply voltage -12 10 12 mV ERAT(SENS) TA = 25C, VCC = 5 % variation of nominal supply voltage -2 1.72 2 % 100 mV on VCC - 10 - kHz VCC = 5.0 V, TA = 25C, CL = 220 pF; input referred - 55 - A/Hz VCC = 3.3 V, TA = 25C, CL = 220 pF; input referred - 80 - A/Hz BWRAT IND Continued on next page... Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 6 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package COMMON ELECTRICAL CHARACTERISTICS (continued): Over full range of TA, over supply voltage range VCC(MIN) through VCC(MAX) of a sensor variant, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit Time from IP > IFAULT to when FAULT pin is pulled below VFAULT; input current step from 0 to 1.2 x IFAULT 0.2 0.5 0.75 s tC(F) Time from IP falling below IFAULT - IHYS to when VFAULT is pulled above VFAULTL; 100pF from FAULT to ground 0.1 - 0.45 s FAULT Range IFAULT Relative to the full scale of IPR; set via the VOC pin 0.5 x IPR - 2 x IPR A FAULT Output Low Voltage VFAULT In fault condition; RF(PULLUP) = 10 k - - 0.4 V OVERCURRENT FAULT CHARACTERISTICS FAULT Response Time [4] FAULT Release Time [4] FAULT Pull-Up Resistance FAULT Leakage Current FAULT Hysteresis[5] FAULT Error [6] tRESPONSE(F) RF(PULLUP) 10 - 500 k IFAULT(LEAKAGE) - 2 - nA - 0.05 x IPR - A - 5 - % IHYST EFAULT Tested at VVOC = 0.2 x VCC (IFAULT threshold = 100% x IPR) VOC Input Range VVOC 0.1 x VCC - 0.4 x VCC V VOC Input Current IVOC - 10 100 nA [1] Typical values are mean 3 sigma values. of a bypass capacitor is required to increase output stability. [3] See definitions of Dynamic Response Characteristics section of this datasheet. [4] Guaranteed by design. [5] After I goes above I P FAULT, tripping the internal comparator, IP must fall below IFAULT - IHYST, before the internal comparator will reset. [6] Fault error is defined as the value at which a fault is reported relative to the desired threshold for I FAULT. [2] Use Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 7 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS732KLATR-20AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 5 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -20 - 20 A Sens - 100 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -2.5 1.6 2.5 % IP = IPR(max), TA = 125C -3 2 3 % IP = IPR(max), TA = 25C to 125C - 2.6 - % VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT Sensitivity Error ESENS Voltage Offset Error VOE IP = IPR(max), TA = -40C -7.5 4.5 7.5 % IP = IPR(max) / 2, TA = 25C -1.5 0.75 1.5 % IP = IPR(max) / 2, TA = 125C -1.5 1.25 1.5 % IP = IPR(max) / 2, TA = -40C -3 2 3 % IP = 0 A, TA = 25C -55 30 55 mV IP = 0 A, TA = 125C -25 18 25 mV IP = 0 A, TA = 25C to 125C - 50 - mV -120 100 120 mV TA = 25C, up to full-scale IP -1 0.2 1 % TA = 125C, up to full-scale IP - 0.3 - % TA = -40C, up to full-scale IP - 0.5 - % IP = IPR(max), TA = 25C, 125C - 11.5 - % IP = IPR(max), TA = -40C, 25C - 11.5 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 220 - mV TA = -40C, 25C - 220 - mV IP = 0 A, TA = -40C Linearity Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 8 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS732KLATR-40AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 5 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -40 - 40 A Sens - 50 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -2.5 1.6 2.5 % IP = IPR(max), TA = 125C -2.5 1 2.5 % - 2.6 - % VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT IP = IPR(max), TA = 25C to 125C IP = IPR(max), TA = -40C Sensitivity Error ESENS Voltage Offset Error Linearity VOE Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN -6.5 3.4 6.5 % IP = IPR(max) / 2, TA = 25C -2 1.5 2 % IP = IPR(max) / 2, TA = 125C -2 0.9 2 % IP = IPR(max) / 2, TA = -40C -4 2.7 4 % IP = 0 A, TA = 25C -40 27 40 mV IP = 0 A, TA = 125C -20 8 20 mV IP = 0 A, TA = 25C to 125C - 45 - mV IP = 0 A, TA = -40C -90 58 90 mV TA = 25C, up to full-scale IP -1.2 0.8 1.2 % TA = 125C, up to full-scale IP - 0.33 - % TA = -40C, up to full-scale IP - 2.5 - % IP = IPR(max), TA = 25C, 125C - 6.3 - % IP = IPR(max), TA = -40C, 25C - 6.3 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 110 - mV TA = -40C, 25C - 110 - mV [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 9 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS732KLATR-65AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 5 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -65 - 65 A Sens - 30 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -2.5 1.6 2.5 % IP = IPR(max), TA = 125C -2.5 1 2.5 % - 2.6 - % VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT IP = IPR(max), TA = 25C to 125C IP = IPR(max), TA = -40C Sensitivity Error ESENS Voltage Offset Error Linearity VOE Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN -6.5 3.4 6.5 % IP = IPR(max) / 2, TA = 25C -2 1.5 2 % IP = IPR(max) / 2, TA = 125C -2 0.9 2 % IP = IPR(max) / 2, TA = -40C -4 2.7 4 % IP = 0 A, TA = 25C -45 27 45 mV IP = 0 A, TA = 125C -25 8 25 mV IP = 0A, TA = 25C to 125C - 45 - mV IP = 0 A, TA = -40C -95 58 95 mV TA = 25C, up to full-scale IP -2.4 1.7 2.4 % TA = 125C, up to full-scale IP - 0.6 - % TA = -40C, up to full-scale IP - 5.8 - % IP = IPR(max), TA = 25C, 125C - 4.7 - % IP = IPR(max), TA = -40C, 25C - 4.7 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 66 - mV TA = -40C, 25C - 66 - mV [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 10 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS732KLATR-65AU PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 5 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR 0 - 65 A Sens - 60 - mV/A - 0.1 x VCC - V IP = IPR(max), TA = 25C -2.5 1.8 2.5 % IP = IPR(max), TA = 125C -3 2 3 % IP = IPR(max), TA = 25C to 125C - 2.9 - % VIOUT(Q) Unidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT IP = IPR(max), TA = -40C Sensitivity Error ESENS Voltage Offset Error Linearity VOE Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN -8 4.5 8 % IP = IPR(max) / 2, TA = 25C -1.5 0.75 1.5 % IP = IPR(max) / 2, TA = 125C -1.5 1.25 1.5 % IP = IPR(max) / 2, TA = -40C -4 2 4 % IP = 0 A, TA = 25C -55 30 55 mV IP = 0 A, TA = 125C -25 18 25 mV IP = 0A, TA = 25C to 125C - 50 - mV IP = 0 A, TA = -40C -120 100 120 mV TA = 25C, up to full-scale IP -2.5 1.8 2.5 % TA = 125C, up to full-scale IP - 0.7 - % TA = -40C, up to full-scale IP - 4.2 - % IP = IPR(max), TA = 25C, 125C - 7.4 - % IP = IPR(max), TA = -40C, 25C - 7.4 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 132 - mV TA = -40C, 25C - 132 - mV [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 11 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS732KLATR-75AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 5 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range [2] Sensitivity Zero Current Output Voltage IPR -75 - 75 A Sens - 26.6 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -2.5 1.6 2.5 % IP = IPR(max), TA = 125C -2.5 1 2.5 % - 2.6 - % VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [4] ETOT IP = IPR(max), TA = 25C to 125C IP = IPR(max), TA = -40C Sensitivity Error ESENS Voltage Offset Error Linearity VOE Error [5] LIFETIME DRIFT CHARACTERISTICS ELIN -6.5 3.4 6.5 % IP = IPR(max) / 2, TA = 25C -2 1.5 2 % IP = IPR(max) / 2, TA = 125C -2 0.9 2 % IP = IPR(max) / 2, TA = -40C -4 2.7 4 % IP = 0 A, TA = 25C -45 27 45 mV IP = 0 A, TA = 125C -25 8 25 mV IP = 0 A, TA = 25C to 125C - 45 - mV IP = 0 A, TA = -40C -95 58 95 mV TA = 25C, up to full-scale IP -2.9 2.3 2.9 % TA = 125C, up to full-scale IP - 1 - % TA = -40C, up to full-scale IP - 8.1 - % IP = IPR(max), TA = 25C, 125C - 4.4 - % IP = IPR(max), TA = -40C, 25C - 4.4 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 59 - mV TA = -40C, 25C - 59 - mV [6] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. Devices trimmed at half-scale IP. Operating above this limit may result in decreased accuracy. [3] A single part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [4] Percentage of I , with I = I P P PR(MAX) / 2. [5] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [6] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 12 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS733KLATR-20AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 3.3 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -20 - 20 A Sens - 66 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -4.5 1.7 4.5 % IP = IPR(max), TA = 125C -3 1.25 3 % IP = IPR(max), TA = 25C to 125C - 2.8 - % IP = IPR(max), TA = -40C -10 5 10 % IP = IPR(max) / 2, TA = 25C -1.5 1 1.5 % IP = IPR(max) / 2, TA = 125C -1.5 0.8 1.5 % IP = IPR(max) / 2, TA = -40C -3 2 3 % IP = 0 A, TA = 25C -55 21 55 mV IP = 0 A, TA = 125C -25 10 25 mV VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT Sensitivity Error ESENS Voltage Offset Error VOE IP = 0 A, TA = 25C to 125C - 35 - mV -120 80 120 mV TA = 25C, up to full-scale IP -1 0.3 1 % TA = 125C, up to full-scale IP - 0.4 - % TA = -40C, up to full-scale IP - 0.4 - % IP = IPR(max), TA = 25C, 125C - 14 - % IP = IPR(max), TA = -40C, 25C - 14 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 145 - mV TA = -40C, 25C - 145 - mV IP = 0 A, TA = -40C Linearity Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 13 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS733KLATR-20AB-H PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 3.3 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -20 - 20 A Sens - 66 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -4.5 1.7 4.5 % IP = IPR(max), TA = 125C -3 1.25 3 % IP = IPR(max), TA = 25C to 125C - 2.8 - % IP = IPR(max), TA = -40C -4.5 1.7 4.5 % IP = IPR(max) / 2, TA = 25C -1.5 1 1.5 % IP = IPR(max) / 2, TA = 125C -1.5 0.8 1.5 % IP = IPR(max) / 2, TA = -40C -1.5 1 1.5 % IP = 0 A, TA = 25C -55 21 55 mV IP = 0 A, TA = 125C -25 10 25 mV VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT Sensitivity Error ESENS Voltage Offset Error Linearity VOE Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN IP = 0 A, TA = 25C to 125C - 35 - mV IP = 0 A, TA = -40C -55 21 55 mV TA = 25C, up to full-scale IP -1 0.3 1 % TA = 125C, up to full-scale IP - 0.4 - % TA = -40C, up to full-scale IP - 0.4 - % IP = IPR(max), TA = 25C, 125C - 14 - % IP = IPR(max), TA = -40C, 25C - 14 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 145 - mV TA = -40C, 25C - 145 - mV [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 14 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS733KLATR-40AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 3.3 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -40 - 40 A Sens - 33 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -3 1.4 3 % IP = IPR(max), TA = 125C -2 1.25 2 % IP = IPR(max), TA = 25C to 125C - 2.3 - % VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT Sensitivity Error ESENS Voltage Offset Error VOE Linearity Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN IP = IPR(max), TA = -40C -6.5 3 6.5 % IP = IPR(max) / 2, TA = 25C -1.5 1.3 1.5 % IP = IPR(max) / 2, TA = 125C -2 1 2 % IP = IPR(max) / 2, TA = -40C -4.5 2.2 4.5 % IP = 0 A, TA = 25C -40 9 40 mV IP = 0 A, TA = 125C -40 7 40 mV IP = 0 A, TA = 25C to 125C - 15 - mV IP = 0 A, TA = -40C -75 35 75 mV TA = 25C, up to full-scale IP -1 0.5 1 % TA = 125C, up to full-scale IP - 0.3 - % TA = -40C, up to full-scale IP - 1.3 - % IP = IPR(max), TA = 25C, 125C - 4.9 - % IP = IPR(max), TA = -40C, 25C - 4.9 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 73 - mV TA = -40C, 25C - 73 - mV [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 15 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS733KLATR-40AU PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 3.3 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR 0 - 40 A Sens - 66 - mV/A - 0.1 x VCC - V IP = IPR(max), TA = 25C -2.5 1 2.5 % IP = IPR(max), TA = 125C - 2.5 1 2.5 % - 1.6 - % IP = IPR(max), TA = -40C -6.5 3.3 6.5 % IP = IPR(max) / 2, TA = 25C -1.5 0.9 1.5 % IP = IPR(max) / 2, TA = 125C -1.5 0.9 1.5 % IP = IPR(max) / 2, TA = -40C -4 2.7 4 % IP = 0 A, TA = 25C -30 17 30 mV IP = 0 A, TA = 125C -25 12 25 mV VIOUT(Q) Unidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT Sensitivity Error ESENS Voltage Offset Error VOE IP = IPR(max), TA = 25C to 125C IP = 0 A, TA = 25C to 125C - 28 - mV -110 70 110 mV TA = 25C, up to full-scale IP -1 0.4 1 % TA = 125C, up to full-scale IP - 0.3 - % TA = -40C, up to full-scale IP - 1.3 - % IP = IPR(max), TA = 25C, 125C - 8 - % IP = IPR(max), TA = -40C, 25C - 8 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 145 - mV TA = -40C, 25C - 145 - mV IP = 0 A, TA = -40C Linearity Error [4] LIFETIME DRIFT CHARACTERISTICS ELIN [5] Total Output Error Including Lifetime Drift Sensitivity Error Including Lifetime Drift Offset Voltage Error Including Lifetime Drift ETOT(DRIFT) ESENS(DRIFT) VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 16 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS733KLATR-65AB PERFORMANCE CHARACTERISTICS: Valid at TA = -40C to 125C, VCC= 3.3 V, CBYPASS = 0.1F, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR -65 - 65 A Sens - 20 - mV/A - 0.5 x VCC - V IP = IPR(max), TA = 25C -3.5 1.8 3.5 % IP = IPR(max), TA = 125C -3 1.4 3 % IP = IPR(max), TA = 25C to 125C - 2.9 - % VIOUT(Q) Bidirectional, IP = 0 A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 x VOE / (Sens x IP) Total Output Error [3] ETOT IP = IPR(max), TA = -40C Sensitivity Error Voltage Offset Error Linearity Error [4] ESENS VOE ELIN -6 4 6 % IP = IPR(max) / 2, TA = 25C -2.5 1.6 2.5 % IP = IPR(max) / 2, TA = 125C -2.5 1.6 2.5 % IP = IPR(max) / 2, TA = -40C -4.5 3.1 4.5 % IP = 0 A, TA = 25C -30 17 30 mV IP = 0 A, TA = 125C -25 7 25 mV IP = 0 A, TA = 25C to 125C - 28 - mV IP = 0 A, TA = -40C -70 31 70 mV TA = 25C, up to full-scale IP -1.7 1.1 1.7 % TA = 125C, up to full-scale IP - 0.5 - % TA = -40C, up to full-scale IP - 2.8 - % IP = IPR(max), TA = 25C, 125C - 4 - % IP = IPR(max), TA = -40C, 25C - 4 - % IP = IPR(max) / 2, TA = 25C, 125C - 2.2 - % IP = IPR(max) / 2, TA = -40C, 25C - 3.3 - % TA = 25C, 125C - 44 - mV TA = -40C, 25C - 44 - mV LIFETIME DRIFT CHARACTERISTICS [5] Total Output Error Including Lifetime Drift ETOT(DRIFT) Sensitivity Error Including Lifetime Drift ESENS(DRIFT) Offset Voltage Error Including Lifetime Drift VOE(DRIFT) Typical values with are mean 3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification. part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic performance data plots for temperature drift performance. [3] Percentage of I , with I = I P P PR(MAX). [4] The sensor will continue to respond to current beyond the range of I PR until the high or low output saturation voltage. However, the nonlinearity in this region may be worse than the nominal operating range. [5] Lifetime drift characteristics are based on AEC-Q100 qualification results. Typical values are mean 3 sigma of worst case stress testing. Drift is a function of customer application conditions. Contact Allegro MicroSystems for further information. [1] [2] A single Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 17 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package 2.6 100 2.58 80 2.56 60 Voltage Offset Error (mV) Zero Current Output Voltage (V) CHARACTERISTIC PERFORMANCE ACS732KLATR-40AB-T (5V) for ~150 parts 2.54 2.52 2.5 2.48 2.46 40 20 0 -20 -40 2.44 -60 2.42 -80 2.4 -100 -40 -20 0 20 40 60 80 100 120 140 -40 -20 0 20 Temperature (C) 80 100 120 140 80 100 120 140 80 100 120 140 2.0% 50.8 1.5% Sensi ti vi ty Error (%) Sensi ti vi ty (mV/A) 60 2.5% 51.2 50.4 50 49.6 1.0% 0.5% 0.0% -0.5% -1.0% -1.5% 49.2 48.8 40 Temperature (C) -2.0% -2.5% -40 -20 0 20 40 60 80 100 120 140 -40 -20 0 20 40 60 Temperature (C) Temperature (C ) 3.0% 5.0% 4.0% Total Output Error (%) 3.0% 1.0% 0.0% -1.0% -2.0% -3.0% -40 -20 0 20 52 51.6 51.2 50.8 50.4 50 49.6 49.2 40 60 48.8 80 Temperature48.4 (C) 48 -40 Sensitvity (mV/A) Li neari ty Error (%) 2.0% 2.0% 1.0% 0.0% -1.0% -2.0% -3.0% -4.0% 100 120 -5.0% 140 -40 -20 0 20 40 60 Temperature (C) -20 0 40 20 60 80 100 120 140 Temperature [C ] 3 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 18 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package CHARACTERISTIC PERFORMANCE ACS732 AND ACS733 TYPICAL FREQUENCY RESPONSE ACS732 and ACS733 Frequency Response Magnitude [dB] 5 0 -3dB 1.8 MHz -5 -10 10 1 10 2 10 3 10 4 Frequency [Hz] 10 5 10 6 50 Phase [] 0 -50 -100 -150 10 1 10 2 10 3 10 4 Frequency [Hz] 10 5 10 6 For information regarding bandwidth characterization methods used for the ACS732 and ACS733, see the "Characterizing System Bandwidth" application note (https://allegromicro.com/en/insights-and-innovations/technical-documents/hall-effect-sensor-ic-publications/an296169-acs720-bandwidth-testing) on the Allegro website. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 19 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package RESPONSE CHARACTERISTICS DEFINITIONS AND PERFORMANCE DATA Response Time (tRESPONSE) Rise Time (tr) The time interval between a) when the sensed input current reaches 90% of its final value, and b) when the sensor output reaches 90% of its full-scale value. The time interval between a) when the sensor reaches 10% of its full-scale value, and b) when it reaches 90% of its full-scale value. The time interval between a) when the sensed input current reaches 20% of its full-scale value, and b) when the sensor output reaches 20% of its full-scale value. The rate of change [V/s] in the output voltage from a) when the sensor reaches 10% of its full-scale value, and b) when it reaches 90% of its full-scale value. Propagation Delay (tpd) Output Slew Rate (SR) Response Time, Propagation Delay, Rise Time, and Output Slew Rate (ACS732-5V) Applied current step with 10%-90% rise time = 1 s Test Conditions: TA = 25C, CBYPASS = 0.1 F, CL = 0 F tRESPONSE SR [V/s] tpd tr Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 20 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package OVERCURRENT FAULT Overcurrent Fault FAULT Pin Output The ACS732 and ACS733 have fast and accurate overcurrent fault detection circuitry. The overcurrent fault threshold (IFAULT) is user-configurable via an external resistor divider and supports a range of 50% to 200% of the full-scale primary input (IPR(MAX)). Fault response and the overcurrent fault thresholds are described in the following sections. Fault Response The high bandwidth of the ACS732 and ACS733 devices allow for extremely fast and accurate overcurrent fault detection. An overcurrent event occurs when the magnitude of the input current (IP) exceeds the user-set threshold (IFAULT). Fault response time (tRESPONSE(F)) is defined from the time IP goes above IFAULT to the time the FAULT pin goes below VFAULT. Overcurrent fault response is illustrated in Figure 3. When IP goes below IFAULT - IHYST, the FAULT pin will be released. The rise time of VFAULT will depend on the value of the resistor RF(PULLUP) and the capacitance on the pin. Setting the Overcurrent Fault Threshold The overcurrent fault threshold (IFAULT) is set via a resistor divider from VCC to ground on the VOC pin. The voltage on the VOC pin, VVOC, may range from 0.1 x VCC to 0.4 x VCC. IFAULT may be set anywhere from 50% to 200% IPR(MAX). Primary Current (IP) t2 IFAULT tRESPONSE(F) t1 t1 = Time at which input current surpasses IFAULT threshold t2 = Time at which output of FAULT pin is < VFAULT VFAULT t Figure 3: Overcurrent Fault Response IFAULT 2 x I PR(max) Overcurrent fault threshold versus VVOC is shown in Figure 4. The equation for calculating the trip current is shown below. For bidirectional devices, the fault will trip for both positive and negative currents. IFAULT = IPR(MAX) { 5x VVOC VCC } This may be rearranged to solve for the appropriate VVOC value based on a desired over current fault threshold, shown by the equation: VCC IFAULT VVOC = x 5 IPR(MAX) By setting VVOC with a resistor divider from VCC, the ratio of VVOC / VCC will remain constant with changes to VCC. In this regard, the fault trip point will remain constant even as the supply voltage varies. 0.5 x IPR(max) 0.1 x VCC 0.4 x VCC VVOC Figure 4: Fault Threshold vs. VVOC It is best practice to use resistor values < 10 k for setting VVOC. With larger resistor values, the leakage current on VOC may result in errors in the trip point. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 21 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package DEFINITIONS OF ACCURACY CHARACTERISTICS Sensitivity (Sens). The change in sensor IC output in response to a 1A change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity (G/A) (1 G = 0.1 mT) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sensitivity (mV/A) for the full-scale current of the device. Increasing VIOUT (V) { [ ELIN = 1 - VIOUT (IPR(max)) - VIOUT(Q) 2 x VIOUT (IPR(max)/2) - VIOUT(Q) ]} Accuracy at 25C Only IPR(min) -IP (A) Full Scale IP ETOT (IP) = VIOUTideal(IP) - VIOUT(IP) Sensideal(IP)x IP IPR(max) 0A Accuracy at 25C Only Decreasing VIOUT (V) Accuracy Across Temperature Figure 5: Output Voltage versus Sensed Current +ETOT Voltage Offset Error (VOE). The deviation of the device output from its ideal quiescent value of 0.5 x VCC (bidirectional) or 0.1 x VCC (unidirectional) due to nonmagnetic causes. To convert this voltage to amperes, divide by the device sensitivity, Sens. Total Output Error (ETOT). The difference between the current measurement from the sensor IC and the actual current (IP), relative to the actual current. This is equivalent to the difference between the ideal output voltage and the actual output voltage, divided by the ideal sensitivity, relative to the current flowing through the primary conduction path: +IP (A) VIOUT(Q) where VIOUT(IPR(max)) is the output of the sensor IC with the maximum measurement current flowing through it and VIOUT(IPR(max)/2) is the output of the sensor IC with half of the maximum measurement current flowing through it. Zero Current Output Voltage (VIOUT(Q)). The output of the sensor when the primary current is zero. For a unipolar supply voltage, it nominally remains at 0.5 x VCC for a bidirectional device and 0.1 x VCC for a unidirectional device. For example, in the case of a bidirectional output device, VCC = 3.3 V translates into VIOUT(Q) = 1.65 V. Variation in VIOUT(Q) can be attributed to the resolution of the Allegro linear IC quiescent voltage trim and thermal drift. Accuracy at 25C Only Ideal VIOUT Accuracy Across Temperature Nonlinearity (ELIN). The nonlinearity is a measure of how linear the output of the sensor IC is over the full current measurement range. The nonlinearity is calculated as: Accuracy Across Temperature Across Temperature 25C Only -IP +IP x 100 (%) The Total Output Error incorporates all sources of error and is a function of IP. At relatively high currents, ETOT will be mostly due to sensitivity error, and at relatively low currents, ETOT will be mostly due to Voltage Offset Error (VOE). As IP approaches zero, ETOT approaches infinity due to the offset voltage. This is illustrated in Figure 5 and Figure 6. Figure 5 shows a distribution of output voltages versus IP at 25C and across temperature. Figure 6 shows the corresponding ETOT versus IP. -ETOT Figure 6: Total Output Error versus Sensed Current Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 22 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package APPLICATION INFORMATION Ratiometry The ACS732 and ACS733 are both ratiometric sensors. This means that for a given change in supply voltage, the device's zero current output voltage and sensitivity will scale proportionally. Sensitivity Ratiometry Ideally, a 5% increase in VCC will result in a 5% increase in sensitivity. However, the ratiometric response of any sensor is not ideal. Ratiometric Sensitivity Error ERAT(SENS) is specified by the equation: ERAT(SENS) = 100% x (1 - < SensitivityVCC VCC(N) F2 SensitivityVCC(N) x VCC where VCC(N) is equal to the nominal VCC (3.3 V, or 5.0 V) and SensitivityVCC(N) is the measured sensitivity at nominal VCC for a particular device. The symbol VCC is the measured VCC value in application and SensitivityVCC is the measured sensitivity at that VCC level for a particular device. Zero Current Offset Ratiometry Ratiometric error for Zero Current Offset may be calculated using the following equation: V ERAT(Q) = VIOUT(Q)VCC - VIOUT(Q)VCC(N) x V CC CC(N) Where VCC(N) is equal to the nominal VCC (3.3 V, or 5.0 V) and VIOUT(Q)VCC(N) is the measured Zero Current Offset voltage at nominal VCC for a particular device. The symbol VCC is the measured VCC value in application and VIOUT(Q)VCC is the measured zero current offset voltage for a particular device. If there is an average sensitivity error or average offset voltage, then the average Total Error is estimated as: ETOTAVG (IP) = ESENSAVG + 100 x VOEAVG Sens x IP Layout Guidelines There are a few considerations during PCB layout that will help to maintain high accuracy when using Allegro's integrated current sensors. Below is a list of common layout mistakes that should be avoided: * Extending current carrying traces too far beneath the IC, or injecting current from the side of the IC * Placing secondary current phase traces too close to or below the IC Extending the Current Traces The length of copper trace beneath the IC may impact the path of current flowing through the IP bus. This may cause variation in the coupling factor from the primary current loop of the package to the IC, and may reduce the overall creepage distance in application. It is best practice for the current to approach the IC parallel to the current-carrying pins, and for the current-carrying trace to not creep towards the center of the package. Refer to Figure 7. DO DO NOT Estimating Total Error vs. Sensed Current The performance characteristics tables give distribution (3sigma) values for Total Error at IPR(MAX); however, one may be interested in the expected error at a particular current. This error may be estimated using the distribution data for the components of Total Error, Sensitivity Error, and Offset Voltage. The 3 sigma value for Total Error (ETOT) as a function if the sensed current is estimated as: 2 ETOT (IP) = ESENS + ( 100 x VOE Sens x IP 2 ) where ESENS and VOE are the 3 sigma values for those error terms. Figure 7: Best Practice Layout Techniques for Current Traces If current must approach the package from the side, it is recommended to reduce the angle as much as possible. For more information on best current sensor layout practices refer to the application note "Techniques to Minimize Common-Mode Field Interference When Using Allegro Current Sensor ICs" on the Allegro website. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 23 ACS732 and ACS733 Thermal Rise vs. Primary Current Self-heating due to the flow-off current should be considered during the design of any current sensing system. The sensor, printed circuit board (PCB), and contacts to the PCB will generate heat as current moves through the system. The thermal response is highly dependent on PCB layout, copper thickness, cooling techniques, and the profile of the injected current. The current profile includes peak current, current "on-time", and duty cycle. While the data presented in this section was collected with direct current (DC), these numbers may be used to approximate thermal response for both AC signals and current pulses. The plot in Figure 8 shows the measured rise in steady-state die temperature of the ACS732/3 versus continuous current at an ambient temperature, TA, of 25 C. The thermal offset curves may be directly applied to other values of TA. Conversely, Figure 9 shows the maximum continuous current at a given TA. Surges beyond the maximum current listed in Figure 9 are allowed given the maximum junction temperature, TJ(MAX) (165), is not exceeded. 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package The thermal capacity of the ACS732/3 should be verified by the end user in the application's specific conditions. The maximum junction temperature, TJ(MAX) (165C), should not be exceeded. Further information on this application testing is available in the DC and Transient Current Capability application note on the Allegro website. ASEK73x Evaluation Board Layout Thermal data shown in Figure 8 was collected using the ASEK73x Evaluation Board (TED-0001795). This board includes 1500 mm2 of 2 oz. (0.0694 mm) copper connected to pins 1 through 4 and pins 5 through 8, with thermal vias connecting the layers. Top and bottom layers of the PCB are shown below in Figure 10. Figure 8: Self Heating in the LA Package Due to Current Flow Figure 10: Top and Bottom Layers for ASEK73x Evaluation Board Figure 9: Maximum Continuous Current at a Given TA Gerber files for the ASEK73x evaluation board are available for download from the Allegro website. See the technical documents section of the ACS732 and ACS733 device webpage. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 24 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package NOT TO SCALE All dimensions in millimeters. 9.54 1.27 0.65 Package Outline 2.25 7.25 17.27 Current Out Current In 21.51 Perimeter holes for stitching to the other, matching current trace design, layers of the PCB for enhanced thermal capability. Figure 11: High-Isolation PCB Layout Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 25 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package PACKAGE OUTLINE DRAWING 10.30 0.20 D 8 0 16 D2 D1 0.33 0.20 7.50 0.10 1.728 1.040 D 10.30 0.33 A D 1.40 REF 1 2 1.27 0.40 Branded Face 16x SEATING PLANE 0.10 C 0.51 0.31 1.27 BSC 0.25 BSC SEATING PLANE GAUGE PLANE C 2.65 MAX 0.30 0.10 For Reference Only; not for tooling use (reference MS-013AA) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A Terminal #1 mark area ACS732 (5 V) ACS733 (3.3 V) ACS732 Lot Number ACS733 Lot Number 1 1 B Standard Branding Reference View B Branding scale and appearance at supplier discretion C Line 1: Part Number Line 2: First 9 characters of Assembly Lot Number Reference land pattern layout (reference IPC7351 SOIC127P600X175-8M); all pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet application process requirements and PCB layout tolerances D Hall elements (D1, D2); not to scale 0.65 16 1.27 1.27 0.65 16 1.65 2.25 9.75 9.50 1 1 2 C PCB Layout Reference View 2 High-Isolation PCB Layout Reference View Figure 12: Package LA, 16-Pin SOICW Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 26 ACS732 and ACS733 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package Revision History Number Date Description - September 20, 2017 Initial release 1 January 8, 2018 2 March 8, 2018 Added ACS732KLATR-20AB-T part option 3 June 20, 2018 Updated Working Voltage for Basic Isolation units (page 4); added Fault Response Time and Fault Release Time characteristics (page 6) 4 July 2, 2018 5 October 1, 2018 6 November 13, 2018 Added ACS732KLATR-65AU-T part option (page 2 and 10) Added ACS732KLATR-75AB-T characteristic performance plots (page 18) 7 November 16, 2018 Added ACS732KLATR-65AB-T part option (page 2, 10, and 19) 8 December 10, 2018 Updated UL certificate number 9 February 26, 2019 10 May 23, 2019 11 August 22, 2019 12 September 10, 2019 Added Hall plate dimensions (page 36) 13 September 26, 2019 Added Hall element positions to package outline drawings (page 36) Updated Rise Time, Response Time, and Propagation Delay Time (page 5) Added "Thermal Rise vs. Primary Current" and "ASEK73x Evaluation Board Layout" to the Applications Information section (page 28) Added ACS732KLATR-75AB-T variant (pages 2 and 9) Updated Secondary Hall Coupling Factor value (page 5) Added Dielectric Surge Strength Test Voltage to Isolation Characteristics table (page 3) Updated Sensitivity Error (pages 10-11) and Total Output Error (page 11) Added Maximum Continuous Current to Absolute Maximum Ratings table (page 3), ESD ratings table (page 3), and updated thermal data section (page 34) January 17, 2020 Corrected Reverse VOC Voltage value (page 3); added Distance Through Insulation and Comparative Tracking Index to Isolation Characteristics table (page 3); updated Rise Time, Response Time, Propagation Delay, and Output Slew Rate test conditions, and added Output Slew Rate (page 6); removed Characteristic Performance plots (pages 17-24); updated Typical Frequency Response plots (page 17) 15 May 8, 2020 Removed Linearity Error from Common Electrical Characteristics table and added Linearity Error to Performance Characteristics Tables (pages 8-16); corrected Sensitivity Error test conditions (pages 8-16); corrected Lifetime Drift Characteristics numbers (pages 8-16); added ACS732KLATR-40AB-T multitemperature characteristic performance plots (page 17); updated Typical Frequency Response plots (page 18); added Response Characteristics Definitions and Performance Data application page (page 19) 16 May 28, 2020 Updated Hall placement (p. 25) 17 June 9, 2020 Added ACS733KLATR-20AB-H part option (page 2, 14); updated Features and Benefits 18 June 29, 2020 Added minimum and maximum values to Linearity Error at TA = 25C (pages 8-17) 14 Copyright 2020, Allegro MicroSystems. Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro's products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro's product can reasonably be expected to cause bodily harm. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. Copies of this document are considered uncontrolled documents. For the latest version of this document, visit our website: www.allegromicro.com Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 27