REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 High Precision, Low Drift, CMOS Voltage Reference http://onsemi.com The REF30xx family of voltage references provides accurate voltage regulation with a maximum temperature drift of 50 ppm/C. The REF30xx can source or sink up to 10 mA of load current. It is supplied in a space-saving SOT-23 package, and for most applications can forgo the use of an output bypass capacitor. SOT23-3 TB SUFFIX CASE 527AG Features * Reference Voltages: * * * * * * 1.25 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V High Accuracy: 0.2% Low Quiescent Current: 30 mA max High Output Current: 10 mA Sourced or Sunk Maximum 50 ppm/C Temperature Drift over the Specified Range of -40C to +85C SOT-23 3-Lead Package This Device is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant MARKING DIAGRAM 3 S3YM S3 = Specific Device Code Y = Production Year = (Last Digit) M = Production Month = (1 - 9, O, N, D) Typical Applications * * * * * 2 1 Battery Powered Systems A/D and D/A Converters Precision Regulator Systems Power Supplies Portable Medical Equipment PIN CONNECTIONS 1 VIN 3 VIN VIN C 0.1 mF VOUT VOUT GND 2 REF30xx VOUT (Top View) GND PIN FUNCTIONS Figure 1. Application Circuit Pin No. Pin Name Function 1 VIN 2 VOUT Output Voltage 3 GND Ground Supply Voltage Input ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. (c) Semiconductor Components Industries, LLC, 2011 April, 2011 - Rev. 0 1 Publication Order Number: REF3012/D REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 Table 1. ORDERING INFORMATION Device Output Voltage REF3012TB-GT3 1.25 V REF3020TB-GT3 2.048 V REF3025TB-GT3 2.5 V REF3030TB-GT3 3.0 V REF3033TB-GT3 3.3 V REF3040TB-GT3 (Note 1) 4.096 V Marking Package Shipping S3YM SOT-23 3000 / Tape & Reel 1. Contact factory for availability of these and other custom voltages. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Table 2. ABSOLUTE MAXIMUM RATINGS (Note 2) Value Unit 6.5 V Storage Temperature Range -55 to +125 _C Junction Temperature Range +150 _C Rating VIN Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 2. Maximum terminal current is bounded by the maximum current handling of the switches, maximum power dissipation of the package. Table 3. RECOMMENDED OPERATING CONDITIONS Rating Temperature Range http://onsemi.com 2 Value Unit -40 to +85 _C REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 Table 4. ELECTRICAL CHARACTERISTICS (VIN = 3.0 V, IOUT = 0 mA, COUT = 0.001 mF, -40C to +85C unless specified otherwise.) Test Conditions Parameter Output Voltage REF3012 REF3020 REF3025 REF3030 (VIN = 5.0 V) REF3033 (VIN = 5.0 V) REF3040 (VIN = 5.0 V) Symbol Min Typ Max Unit Vout 1.2475 2.044 2.495 2.994 3.294 4.088 1.250 2.048 2.500 3.000 3.300 4.096 1.2525 2.052 2.505 3.006 3.306 4.104 V +0.2 % Output Voltage Accuracy -0.2 Output Voltage Noise (Note 3) f = 0.1 Hz to 10 Hz 50 Line Regulation 2.7 V VIN 5.5 V 30 100 mV/V Output voltage temp Drift -40C TA +85C 20 50 ppm/C Long-Term Stability (Note 3) 0-1000 h Load Regulation VIN = 3 V 0 mA < ILOAD < 10 mA -10 mA < ILOAD < 0 mA dVOUT/dT mVp-p 50 Thermal Hysteresis (Note 3) TA = 125C Dropout Voltage VOUT = 2.5 V Short-Circuit Current (Note 3) TA = 25C OUT pin shorted to GND OUT pin shorted to IN dVOUT/ dILOAD ppm mV/mA 100 150 250 350 dT 100 ppm VIN - VOUT 1 2.5 50 20 60 40 ISC Turn On Settling Time To 0.1% at VIN = 5 V with CL = 0 Power Supply Voltage IL = 0 VS Supply Current IL = 0 IQ Temperature Range Specified Range Operating Range Storage Range mA 2 2.7 -40 -40 -55 3. Guaranteed by design. http://onsemi.com 3 mV ms 5.5 V 30 mA +85 +85 +125 C REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 TYPICAL CHARACTERISTICS 1.2502 1.2508 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1.2506 1.2504 1.2502 1.2500 Unit 3 1.2498 1.2496 Unit 2 1.2494 Unit 1 1.2492 -40 -15 10 35 60 85 1.2501 1.2500 1.2499 1.2498 4.0 OUTPUT VOLTAGE CHANGE (mV) +85C 25 +25C 0 3.0 3.5 4.0 4.5 5.5 5.0 +85C 1.5 +25C 1.0 -40C 0.5 0 -0.5 -1.0 -1.5 -10 5.5 SINKING SOURCING -5 0 5 10 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) Figure 4. Line Regulation over Temperature Figure 5. Load Regulation over Temperature 160 No Load -10 No Load 140 -20 -30 1 nF Load -40 10 nF Load -50 -60 -70 100 nF Load -80 1 5.0 4.5 Figure 3. Output Voltage vs. Supply Voltage (No Load) OUTPUT IMPEDANCE (W) OUTPUT VOLTAGE CHANGE (mV) 3.5 Figure 2. Output Voltage vs. Temperature 2.0 2.5 3.0 INPUT VOLTAGE (V) 0 PSRR (dB) 2.5 TEMPERATURE (C) -40C -90 Unit 2 Unit 3 50 -25 Unit 1 10 100 1k 10 k 100 k 1 nF Load 120 10 nF Load 100 80 60 100 nF Load 40 20 0 1M 1 10 100 1k 10 k 100 k FREQUENCY (Hz) FREQUENCY (Hz) Figure 6. Power-Supply Rejection Ratio vs. Frequency Figure 7. Output Impedance vs. Frequency http://onsemi.com 4 REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 TYPICAL CHARACTERISTICS Figure 8. Step Response, CL = 0, 3 V Startup Figure 9. 0.1 Hz to 10 Hz Noise Figure 10. Line Transient Response Figure 11. Line Transient Response with Cap. Load Figure 12. Load Transient (IL = 50 mA) Figure 13. Load Transient (IL = 10 mA) http://onsemi.com 5 REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 APPLICATION INFORMATION Application Information Temperature Drift A supply bypass capacitor of 0.1 mF is recommended. In most applications, the REF30xx does not require an output bypass capacitor. For the effects of a capacitive load on device performance, see Figures 8 and 9 in the Typical Characteristics section. Temperature drift is defined as the change in the output voltage caused by a change in operating temperature. (See Figure 2 in the Typical Characteristics section.) The REF30xx family is designed to exhibit a temperature drift of less than 50 ppm/C across its entire operating temperature range of -40C to +85C. Power Supply The REF30xx family of references works at supply voltages between 2.7 V and 5.5 V. The maximum dropout voltage in this range is 2.5 mV. While the power supply voltage rises to the specified level during power-up, the REF30xx will temporarily draw a higher than typical current. It is recommended to use a power supply with a fast rising edge. Noise Performance The noise generated by the REF30xx family is typically less than 50 mVp-p between frequencies of 0.1 Hz to 10 Hz, as shown in the Typical Characteristic Curves. Output noise can be additionally reduced using a low-pass filter, although care should be taken, as capacitive loads affect the PSRR and the output impedance. (See the Typical Characteristics section.) Line Regulation Line regulation is defined as the change in output voltage due to the change in the input voltage. For REF30xx, this change is less than 100 mV/V across the specified supply voltage range. Load Regulation Load regulation is defined as the change in output voltage due to a specified change in load current. The REF30xx family can sink or source up to 10 mA of current, with an output change of less than 250 mV/mA when sourcing, or 350 mV/mA when sinking current. Thermal Hysteresis Thermal hysteresis is defined as the change in the output voltage after the device is cycled through the operating temperature range. This change is reported as a fraction of the nominal output voltage, in ppm. The initial output VPRE is measured at 25C. After the device is cooled to -40C, heated to +80C, then cooled back to 25C, the final output voltage VPOST is measured. The thermal hysteresis is equal to T hHYST + V PRE * V POST V NOM @ 10 6(ppm) (eq. 1) where VNOM is the nominal output voltage. http://onsemi.com 6 REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 +5 V 0.1 mF Vin Vout REF3040 GND +5 V +5 V A VCC mP CAT5171 SDA SDA SCL SCL W B Figure 14. Adjustable Voltage Reference +5 V +5 V +5 V 0.1 mF Vin REF30xx VCC Vout 10 W VREF GND ADC 0.01 mF mP Vin serial bus Figure 15. Data Acquisition System using REF30xx Voltage Reference, with Noise Filter http://onsemi.com 7 REF3012, REF3020, REF3025, REF3030, REF3033, REF3040 PACKAGE DIMENSIONS SOT-23, 3 Lead CASE 527AG-01 ISSUE O D SYMBOL MIN A 0.89 1.12 A1 0.013 0.10 b 0.37 0.50 c 0.085 0.18 D 2.80 3.04 E 2.10 2.64 E1 1.20 1.40 3 E1 1 E 2 e MAX e 0.95 BSC e1 1.90 BSC L 0.40 REF e1 L1 TOP VIEW A NOM 0.54 REF 0 8 q b L1 A1 SIDE VIEW L c END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC TO-236. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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