TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 D D D D D D D D D Extremely Low Offset Voltage . . . 1 V Max Extremely Low Change on Offset Voltage With Temperature . . . 0.003 V/C Typ Low Input Offset Current 500 pA Max at TA = - 55C to 125C AVD . . . 135 dB Min CMRR . . . 120 dB Min kSVR . . . 110 dB Min Single-Supply Operation Common-Mode Input Voltage Range Includes the Negative Rail No Noise Degradation With External Capacitors Connected to VDD - D008, JG, OR P PACKAGE (TOP VIEW) CXA IN - IN + VDD - 1 8 2 7 3 6 4 5 CXB VDD + OUT CLAMP D014, J, OR N PACKAGE (TOP VIEW) CXB CXA NC IN - IN + NC VDD - description 1 14 2 13 3 12 4 11 5 10 6 9 INT/EXT CLK IN CLK OUT VDD + OUT CLAMP C RETURN 8 The TLC2652 and TLC2652A are high-precision chopper-stabilized operational amplifiers using FK PACKAGE Texas Instruments Advanced LinCMOS (TOP VIEW) process. This process, in conjunction with unique chopper-stabilization circuitry, produces opera tional amplifiers whose performance matches or exceeds that of similar devices available today. Chopper-stabilization techniques make possible 3 2 1 20 19 NC 18 CLK OUT 4 extremely high dc precision by continuously NC 17 NC 5 nulling input offset voltage even during variations IN - 16 VDD + 6 in temperature, time, common-mode voltage, and 15 NC NC 7 power supply voltage. In addition, low-frequency 14 OUT 8 IN + noise voltage is significantly reduced. This high 9 10 11 12 13 precision, coupled with the extremely high input impedance of the CMOS input stage, makes the TLC2652 and TLC2652A an ideal choice for low-level signal processing applications such as strain gauges, thermocouples, and other transducer amplifiers. For applications that NC - No internal connection require extremely low noise and higher usable bandwidth, use the TLC2654 or TLC2654A device, which has a chopping frequency of 10 kHz. The TLC2652 and TLC2652A input common-mode range includes the negative rail, thereby providing superior performance in either single-supply or split-supply applications, even at power supply voltage levels as low as 1.9 V. Two external capacitors are required for operation of the device; however, the on-chip chopper-control circuitry is transparent to the user. On devices in the 14-pin and 20-pin packages, the control circuitry is made accessible to allow the user the option of controlling the clock frequency with an external frequency source. In addition, the clock threshold level of the TLC2652 and TLC2652A requires no level shifting when used in the single-supply configuration with a normal CMOS or TTL clock input. NC VDD- NC C RETURN CLAMP V XA V XB NC INT/EXT CLK IN 7 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Advanced LinCMOS is a trademark of Texas Instruments. Copyright 2001, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 description (continued) Innovative circuit techniques are used on the TLC2652 and TLC2652A to allow exceptionally fast overload recovery time. If desired, an output clamp pin is available to reduce the recovery time even further. The device inputs and output are designed to withstand - 100-mA surge currents without sustaining latch-up. Additionally the TLC2652 and TLC2652A incorporate internal ESD-protection circuits that prevent functional failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015.2; however, care should be exercised in handling these devices, as exposure to ESD may result in degradation of the device parametric performance. The C-suffix devices are characterized for operation from 0C to 70C. The I-suffix devices are characterized for operation from - 40C to 85C. The Q-suffix devices are characterized for operation from - 40C to125C. The M-suffix devices are characterized for operation over the full military temperature range of - 55C to125C. AVAILABLE OPTIONS PACKAGED DEVICES TA VIOmax AT 25C 0C to 70C 8 PIN 14 PIN 20 PIN CHIP FORM (Y) SMALL OUTLINE (D008) CERAMIC DIP (JG) PLASTIC DIP (P) SMALL OUTLINE (D014) CERAMIC DIP (J) PLASTIC DIP (N) CHIP CARRIER (FK) 1 V 3 V TLC2652AC 8D TLC2652AC-8D TLC2652C-8D -- -- TLC2652ACP TLC2652CP TLC2652AC 14D TLC2652AC-14D TLC2652C - 14D -- -- TLC2652ACN TLC2652CN -- -- TLC2652Y - 40C to 85C 1 V 3 V TLC2652AI 8D TLC2652AI-8D TLC2652A-8D -- -- TLC2652AIP TLC2652IP TLC2652AI 14D TLC2652AI-14D TLC2652I-14D -- -- TLC2652AIN TLC2652IN -- -- -- - 40C to 125C 3.5 V TLC2652Q-8D -- -- -- -- -- -- -- - 55C to 125C 3 V 3.5 V TLC2652AM-8D TLC2652M-8D TLC2652AMJG TLC2652MJG TLC2652AMP TLC2652MP TLC2652AM-14D TLC2652M-14D TLC2652AMJ TLC2652MJ TLC2652AMN TLC2652MN TLC2652AMFK TLC2652MFK -- The D008 and D014 packages are available taped and reeled. Add R suffix to the device type (e.g., TLC2652AC-8DR). Chips are tested at 25C. functional block diagram DISTRIBUTION OF TLC2652 INPUT OFFSET VOLTAGE VDD + 7 36 IN + IN - 3 6 + - 2 B B Main CIC A B CompensationBiasing Circuit OUT A + - A Null CXA CXB 150 Units Tested From 1 Wafer Lot 32 VDD = 5 V TA = 25C 28 N Package CLAMP External Components Percentage of Units - % 5 Clamp Circuit 24 20 16 12 8 4 4 VDD - 8 0 -3 C RETURN Pin numbers shown are for the D (14 pin), JG, and N packages. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 -2 -1 0 1 2 VIO - Input Offset Voltage - V 3 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TLC2652Y chip information This chip, when properly assembled, displays characteristics similar to the TLC2652C. Thermal compression or ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive epoxy or a gold-silicon preform. BONDING PAD ASSIGNMENTS (13) (12) (11) (10) (9) (14) (8) CHIP THICKNESS: 15 TYPICAL BONDING PADS: 4 x 4 MINIMUM TJmax = 150C TOLERANCES ARE 10%. 80 ALL DIMENSIONS ARE IN MILS. (1) PIN (7) IS INTERNALLY CONNECTED TO BACK SIDE OF CHIP. FOR THE PINOUT, SEE THE FUNCTIONAL BLOCK DIAGRAM. (2) (4) (5) (7) 90 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage VDD + (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V Supply voltage VDD - (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 8 V Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 V Input voltage, VI (any input, see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V Voltage range on CLK IN and INT/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VDD - to VDD - + 5.2 V Input current, II (each input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 mA Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Duration of short-circuit current at (or below) 25 C (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited Current into CLK IN and INT/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 mA Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C I suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40C to 85C Q suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40C to 125C M suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65 C to 150 C Case temperature for 60 seconds: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or P package . . . . . . . . . . . . . 260 C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J or JG package . . . . . . . . . . . . . . . . 300C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential voltages, are with respect to the midpoint between VDD + and VDD - . 2. Differential voltages are at IN+ with respect to IN -. 3. The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum dissipation rating is not exceeded. DISSIPATION RATING TABLE PACKAGE TA 25C POWER RATING D008 725 mV D014 950 mV FK 1375 mV J 1375 mV JG 1050 mV N 1575 mV P 1000 mV 8.0 mW/C DERATING FACTOR ABOVE TA = 25C TA = 70C POWER RATING TA = 85C POWER RATING TA = 125C POWER RATING 5.8 mW/C 464 mW 377 mW 145 mW 7.6 mW/C 608 mW 494 mW 190 mW 11.0 mW/C 880 mW 715 mW 275 mW 11.0 mW/C 880 mW 715 mW 275 mW 8.4 mW/C 672 mW 546 mW 210 mW 12.6 mW/C 1008 mW 819 mW 315 mW 640 mW 520 mW 200 mW recommended operating conditions C SUFFIX Supply voltage, VDD Common-mode input voltage, VIC Clock input voltage Operating free-air temperature, TA 4 I SUFFIX Q SUFFIX M SUFFIX MIN MAX MIN MAX MIN MAX MIN MAX 1.9 8 1.9 8 1.9 8 1.9 8 VDD - VDD + - 1.9 VDD - VDD - + 5 0 70 VDD - VDD - - 40 POST OFFICE BOX 655303 VDD + - 1.9 VDD - + 5 85 VDD - VDD + - 1.9 VDD - VDD - + 5 - 40 125 * DALLAS, TEXAS 75265 VDD - VDD + - 1.9 VDD - VDD - + 5 - 55 125 UNIT V V V C TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 electrical characteristics at specified free-air temperature, VDD = 5 V (unless otherwise noted) PARAMETER VIO Input offset voltage VIO Temperature coefficient of input offset voltage Input offset voltage long-term drift (see Note 4) TEST CONDITIONS TA TLC2652C MIN 25C TYP 0.6 Full range VIC = 0, RS = 50 IIO Input offset current IIB Input bias current VICR Common-mode Common mode input voltage range RS = 50 VOM + Maximum positive peak output voltage swing RL = 10 k, k See Note 5 VOM - Maximum negative peak g output voltage swing k RL = 10 k, See Note 5 AVD Large-signal g g differential voltage amplification VO = 4 V V, RL = 10 k fch Internal chopping frequency CMRR Common-mode rejection j ratio VO = 0,, VIC = VICRmin,, RS = 50 kSVR Supply-voltage y g rejection j ratio (VDD /VIO) VDD = 1.9 V to 8 V, VO = 0, RS = 50 IDD Supply current 1 2.35 UNIT V 0 03 0.03 0 003 0.003 0 03 0.03 V/C 25C 0.003 0.06 0.003 0.02 V/mo 25C 2 60 2 60 100 4 100 60 4 100 Full range g -5 to 3.1 25C 4.7 Full range 4.7 25C - 4.7 Full range - 4.7 25C 120 Full range 120 25C VO = - 4 V to 4 V 0.5 MAX 0 003 0.003 Full range Clamp off-state off state current 3 TYP Full range 25C RL = 100 k MIN 4.35 Full range on state current Clamp on-state TLC2652AC MAX 60 100 -5 to 3.1 4.8 4.7 - 4.7 4.8 V - 4.9 V - 4.7 150 135 150 dB 130 450 450 25C 25 25 Full range 25 25 Hz A 25C 100 100 Full range 100 100 25C 120 Full range 120 25C 110 Full range 110 25C Full range 140 120 140 110 135 dB 110 1.5 2.4 2.5 1.5 pA dB 120 135 pA V 4.7 - 4.9 pA 2.4 2.5 mA Full range is 0 to 70C. NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150C extrapolated at TA = 25 using the Arrhenius equation and assuming an activation energy of 0.96 eV. 5. Output clamp is not connected. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 operating characteristics specified free-air temperature, VDD = 5 V PARAMETER TEST CONDITIONS TA 25C TLC2652C MIN TYP 2 2.8 TLC2652AC MAX MIN TYP 2 2.8 MAX SR + Positive slew rate at unity gain SR - Negative slew rate at unity gain VO = 2.3 V, RL = 10 k, k CL = 100 pF F Vn Equivalent q input noise voltage g (see Note 6) f = 10 Hz 25C 94 94 140 f = 1 kHz 25C 23 23 35 VN(PP) Peak-to-peak equivalent q input noise voltage f = 0 to 1 Hz 25C 0.8 0.8 f = 0 to 10 Hz 25C 2.8 2.8 In Equivalent input noise current f = 10 kHz 25C 0.004 0.004 25C 1.9 1.9 25C 48 48 Gain-bandwidth product m Phase margin at unity gain Full range 1.5 25C 2.3 Full range 1.8 f = 10 kHz, RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF V/s 1.5 3.1 2.3 UNIT 3.1 V/s 1.8 nV/Hz V fA/Hz MHz Full range is 0 to 70C. NOTE 6: This parameter is tested on a sample basis for the TLC2652A. For other test requirements, please contact the factory. This statement has no bearing on testing or nontesting of other parameters. 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 electrical characteristics at specified free-air temperature, VDD = 5 V (unless otherwise noted) PARAMETER VIO Input offset voltage VIO Temperature coefficient of input offset voltage Input offset voltage long-term drift (see Note 4) TA TEST CONDITIONS TLC2652I MIN TYP 25C 0.6 Full range IIO Input offset current IIB Input bias current VICR Common-mode Common mode input voltage range RS = 50 VOM + Maximum positive peak output voltage swing RL = 10 k, k See Note 5 VOM - Maximum negative peak g output voltage swing k RL = 10 k, See Note 5 AVD Large-signal g g differential voltage amplification VO = 4 V V, RL = 10 k 0 03 0.03 V/C 25C 0.003 0.06 0.003 0.02 V/mo 25C 2 60 2 60 150 4 Common-mode rejection j ratio VO = 0,, VIC = VICRmin,, RS = 50 kSVR Supply-voltage y g rejection j ratio (VDD /VIO) VDD = 1.9 V to 8 V, VO = 0, RS = 50 IDD Supply current VO = 0 0, No load 150 60 4 150 Full range g -5 to 3.1 25C 4.7 Full range 4.7 25C - 4.7 Full range - 4.7 25C 120 Full range 120 25C CMRR V 0 003 0.003 Internal chopping frequency VO = - 4 V to 4 V 1 2.95 UNIT 0 03 0.03 Full range Clamp off-state off state current 0.5 MAX 0 003 0.003 25C RL = 100 k 3 TYP 4.95 Full range on state current Clamp on-state MIN Full range RS = 50 VIC = 0, TLC2652AI MAX 60 150 -5 to 3.1 4.8 4.7 - 4.7 4.8 V - 4.9 V - 4.7 150 135 150 dB 125 450 450 25C 25 25 Full range 25 25 Hz A 25C 100 100 Full range 100 100 25C 120 Full range 120 25C 110 Full range 110 25C Full range 140 120 140 110 135 dB 110 1.5 2.4 2.5 1.5 pA dB 120 135 pA V 4.7 - 4.9 pA 2.4 2.5 mA Full range is - 40 to 85C. NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150C extrapolated at TA = 25 using the Arrhenius equation and assuming an activation energy of 0.96 eV. 5. Output clamp is not connected. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 operating characteristics at specified free-air temperature, VDD = 5 V PARAMETER TEST CONDITIONS TA 25C TLC2652I MIN TYP 2 2.8 TLC2652AI MAX MIN TYP 2 2.8 MAX SR + Positive slew rate at unity gain SR - Negative slew rate at unity gain VO = 2.3 V, RL = 10 k, k CL = 100 pF F Vn Equivalent q input noise voltage g (see Note 6) f = 10 Hz 25C 94 94 140 f = 1 kHz 25C 23 23 35 VN(PP) Peak-to-peak equivalent q input noise voltage f = 0 to 1 Hz 25C 0.8 0.8 f = 0 to 10 Hz 25C 2.8 2.8 In Equivalent input noise current f = 1 kHz 25C 0.004 0.004 25C 1.9 1.9 25C 48 48 Gain-bandwidth product m Phase margin at unity gain Full range 1.4 25C 2.3 Full range 1.7 f = 10 kHz, RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF V/s 1.4 3.1 2.3 UNIT 3.1 V/s 1.7 nV/Hz V pA/Hz MHz Full range is - 40 to 85C. NOTE 6: This parameter is tested on a sample basis for the TLC2652A. For other test requirements, please contact the factory. This statement has no bearing on testing or nontesting of other parameters. 8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 electrical characteristics at specified free-air temperature, VDD = 5 V (unless otherwise noted) PARAMETER TA TEST CONDITIONS TLC2652Q TLC2652M MIN VIO Input offset voltage g (see Note 7) VIO Temperature coefficient of input offset voltage Input offset voltage long-term drift (see Note 4) 25C TYP MAX 0.6 3.5 Full range IIO Input offset current IIB Input bias current VICR Common mode input Common-mode voltage range RS = 50 VOM + Maximum positive peak output voltage swing k RL = 10 k, See Note 5 VOM - Maximum negative g peak output voltage swing RL = 10 k, k See Note 5 AVD Large-signal g g differential voltage amplification VO = 4 V V, RL = 10 k fch Internal chopping frequency UNIT TYP MAX 0.5 3 10 8 V 0 003 0.003 0 03 0.03 0 003 0.003 0 03 0.03 V/C 25C 0.003 0.06 0.003 0.02 V/mo 25C 2 60 2 60 Full range 500 25C 4 Full range 500 60 4 500 Full range g -5 to 3.1 25C 4.7 Full range 4.7 25C - 4.7 Full range - 4.7 25C 120 Full range 120 25C -5 to 3.1 4.8 4.7 - 4.9 - 4.7 135 25 25 25 RL = 100 k CMRR Common-mode rejection j ratio VO = 0,, VIC = VICRmin,, RS = 50 25C 120 Full range 120 kSVR Supply-voltage y g rejection j ratio (VDD /VIO) VDD = 1.9 V to 8 V, VO = 0, RS = 50 25C 110 Full range 110 IDD Supply current VO = 0 0, - 4.9 V 150 dB 450 25 Hz A 25C 100 100 Full range 500 500 25C Full range 140 120 140 110 135 dB 110 1.5 2.4 2.5 1.5 pA dB 120 135 pA V 120 25C Clamp off-state off state current 4.8 - 4.7 150 pA V 4.7 Full range VO = - 5 V to 5 V 60 500 450 Clamp on-state on state current No load MIN Full range RS = 50 VIC = 0, TLC2652AM 2.4 2.5 mA On products compliant to MIL-PRF-38535, this parameter is not production tested. Full range is - 40 to 125C for Q suffix, - 55 to 125C for M suffix. NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150C extrapolated at TA = 25 using the Arrhenius equation and assuming an activation energy of 0.96 eV. 5. Output clamp is not connected. 7. This parameter is not production tested. Thermocouple effects preclude measurement of the actual VIO of these devices in high speed automated testing. VIO is measured to a limit determined by the test equipment capability at the temperature extremes. The test ensures that the stabilization circuitry is performing properly. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 operating characteristics specified free-air temperature, VDD = 5 V PARAMETER TEST CONDITIONS 25C SR + Positive slew rate at unity gain SR - Negative slew rate at unity gain Vn Equivalent input noise voltage VN(PP) Peak to peak equivalent input noise voltage Peak-to-peak In m VO = 2.3 V, RL = 10 k k, CL = 100 pF F TLC2652Q TLC2652M TLC2652AM MIN TYP 2 2.8 Full range 1.3 25C 2.3 Full range 1.6 3.1 f = 10 Hz 25C 94 f = 1 kHz 25C 23 f = 0 to 1 Hz 25C 0.8 f = 0 to 10 Hz 25C 2.8 Equivalent input noise current f = 1 kHz 25C 0.004 Gain-bandwidth product f = 10 kHz, RL = 10 k, CL = 100 pF 25C 1.9 Phase margin at unity gain RL = 10 k, CL = 100 pF 25C 48 Full range is - 40 to 125C for the Q suffix, - 55 to 125C for the M suffix. 10 TA POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 UNIT MAX V/s V/s nV/Hz V pA/Hz MHz TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 electrical characteristics at VDD = 5 V, TA = 25C (unless otherwise noted) PARAMETER VIO TEST CONDITIONS TLC2652Y MIN Input offset voltage Input offset voltage long-term drift (see Note 4) VIC = 0 0, RS = 50 UNIT TYP MAX 0.6 3 0.003 0.006 2 60 pA 4 60 pA V V/mo IIO IIB Input offset current VICR Common-mode input voltage g range g RS = 50 VOM + VOM - Maximum positive peak output voltage swing RL = 10 k, See Note 5 4.7 4.8 Maximum negative peak output voltage swing RL = 10 k, See Note 5 - 4.7 - 4.9 V AVD fch Large-signal differential voltage amplification VO = 4 V, RL = 10 k 120 150 dB Input bias current -5 to 3.1 Internal chopping frequency V V 450 Clamp on-state current RL = 100 k Clamp off-state current VO = - 4 V to 4 V VO = 0, VIC = VICRmin, RS = 50 CMRR Common-mode rejection ratio kSVR Supply voltage rejection ratio (VDD /VIO) Supply-voltage Hz A 25 VDD = 1.9 V to 8 V, RS = 50 VO = 0, 100 pA 120 140 dB 110 135 dB IDD Supply current VO = 0, No load 1.5 2.4 mA NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150C extrapolated at TA = 25 using the Arrhenius equation and assuming an activation energy of 0.96 eV. 5. Output clamp is not connected. operating characteristics at VDD = 5 V, TA = 25C PARAMETER SR + Positive slew rate at unity gain SR - Negative slew rate at unity gain TEST CONDITIONS VO = 2.3 V,, CL = 100 pF RL = 10 k,, TLC2652Y TYP 2 2.8 V/s 2.3 3.1 V/s f = 10 Hz 94 f = 1 kHz 23 f = 0 to 1 Hz 0.8 f = 0 to 10 Hz 2.8 Vn Equivalent input noise voltage VN(PP) Peak to peak equivalent input noise voltage Peak-to-peak In Equivalent input noise current f = 1 kHz Gain-bandwidth product f = 10 kHz, CL = 100 pF RL = 10 k, 1.9 Phase margin at unity gain RL = 10 k, CL = 100 pF 48 m POST OFFICE BOX 655303 MAX UNIT MIN nV/Hz V pA/Hz * DALLAS, TEXAS 75265 MHz 11 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS Table of Graphs FIGURE VIO Normalized input offset voltage vs Chopping frequency 1 IIB Input bias current input vs Common-mode Common mode in ut voltage vs Chopping g frequency q y vs Free-air temperature 2 3 4 IIO Input offset current vs Chopping g frequency q y vs Free-air temperature 5 6 Clamp current vs Output voltage 7 Maximum peak-to-peak output voltage vs Frequency VOM Maximum peak output voltage vs Output current vs Free-air temperature 9,, 10 11, 12 AVD Large signal differential voltage amplification Large-signal vs Frequency q y vs Free-air temperature 13 14 Chopping frequency vs Supplyy voltage g vs Free-air temperature 15 16 IDD Supply current vs Supplyy voltage g vs Free-air temperature 17 18 IOS Short circuit output current Short-circuit vs Supplyy voltage g vs Free-air temperature 19 20 SR Slew rate vs Supplyy voltage g vs Free-air temperature 21 22 Voltage follower pulse response Voltage-follower Small-signal g Large-signal 23 24 Peak-to-peak equivalent input noise voltage vs Chopping frequency Equivalent input noise voltage vs Frequency 27 Gain bandwidth product Gain-bandwidth vs Supplyy voltage g vs Free-air temperature 28 29 Phase margin g vs Supply Su ly voltage vs Free-air temperature vs Load capacitance 30 31 32 Phase shift vs Frequency 13 V(OPP) VN(PP) Vn m 12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 8 25, 26 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS NORMALIZED INPUT OFFSET VOLTAGE vs CHOPPING FREQUENCY INPUT BIAS CURRENT vs COMMON-MODE INPUT VOLTAGE 70 IIB I IB - Input Bias Current - pA 60 VIO uV VIO - Normalized Input Offset - V 25 VDD = 5 V VIC = 0 TA = 25C 50 40 30 20 10 VDD = 5 V TA = 25C 20 15 10 5 0 -10 100 1k 10 k Chopping Frequency - Hz 0 -5 100 k -4 -3 -2 1 2 3 4 5 INPUT BIAS CURRENT vs FREE-AIR TEMPERATURE INPUT BIAS CURRENT vs CHOPPING FREQUENCY 100 70 VDD = 5 V VIC = 0 TA = 25C IIB I IB - Input Bias Current - pA IIB I IB - Input Bias Current - pA 0 Figure 2 Figure 1 60 -1 VIC - Common-Mode Input Voltage - V 50 40 30 20 VDD = 5 V VO = 0 VIC = 0 10 10 0 100 1k 10 k 100 k 1 25 45 65 85 105 125 TA - Free-Air Temperature - C Chopping Frequency - Hz Figure 4 Figure 3 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 13 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS INPUT OFFSET CURRENT vs CHOPPING FREQUENCY 10 25 VDD = 5 V VIC = 0 VDD = 5 V VIC = 0 TA = 25C 20 IIIO IO - Input Offset Current - pA IIIO IO - Input Offset Current - pA INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE 15 10 5 8 6 4 2 0 0 100 1k 10 k 105 45 65 85 TA - Free-Air Temperature - C 25 100 k Chopping Frequency - Hz Figure 5 Figure 6 MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE vs FREQUENCY CLAMP CURRENT vs OUTPUT VOLTAGE VDD = 5 V TA = 25C 1 A |Clamp Current| VO(PP) V O(PP) - Maximum Peak-to-Peak Output Voltage - V 100 A 10 A Positive Clamp Current 100 nA 10 nA 1 nA 100 pA Negative Clamp Current 10 pA 1 pA 4 4.2 4.4 4.6 4.8 5 10 8 TA = - 55C 6 TA = 125C 4 2 VDD = 5 V RL = 10 k 0 100 1k 10 k f - Frequency - Hz |VO| - Output Voltage - V Figure 7 Figure 8 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 14 125 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1M TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS MAXIMUM PEAK OUTPUT VOLTAGE vs OUTPUT CURRENT 7.5 VDD = 5 V TA = 25C 4.8 VOM + VDD = 7.5 V TA = 25C |VOM| |VOM - Maximum Peak Output Voltage - V |VOM| |VOM - Maximum Peak Output Voltage - V 5 MAXIMUM PEAK OUTPUT VOLTAGE vs OUTPUT CURRENT VOM - 4.6 4.4 4.2 7.3 7.1 6.9 4 6.7 0 0.4 0.8 1.2 1.6 2 0 0.4 |IO| - Output Current - mA 0.8 1.2 1.6 2 |IO| - Output Current - mA Figure 10 Figure 9 MAXIMUM PEAK OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE MAXIMUM PEAK OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 5 8 VOM VOM - Maximum Peak Output Voltage - V VOM VOM - Maximum Peak Output Voltage - V VOM - VOM + 2.5 VDD = 5 V RL = 10 k 0 - 2.5 -5 4 VDD = 7.5 V RL = 10 k 0 -4 -8 -75 - 50 - 25 0 25 50 75 100 125 TA - Free-Air Temperature - C -75 - 50 - 25 0 25 50 75 100 TA - Free-Air Temperature - C 125 Figure 12 Figure 11 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 15 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE SHIFT vs FREQUENCY 120 60 AA AA AA Phase Shift 80 80 100 AVD 60 120 40 140 20 160 0 - 20 - 40 180 VDD = 5 V RL = 10 k CL = 100 pF TA = 25C 10 100 Phase Shift AVD AVD- Large-Signal Differential Voltage Amplification - dB 100 200 1k 10 k 100 k 1M 220 10 M f - Frequency - Hz Figure 13 LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION vs FREE-AIR TEMPERATURE AVD AVD- Large-Signal Differential Voltage Amplification - dB 155 AA AA AA VDD = 7.5 V RL = 10 k VO = 4 V 150 145 140 135 -75 - 50 - 25 0 25 50 75 100 125 TA - Free-Air Temperature - C Figure 14 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 16 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS CHOPPING FREQUENCY vs FREE-AIR TEMPERATURE CHOPPING FREQUENCY vs SUPPLY VOLTAGE 460 540 VDD = 5 V TA = 25C 450 Chopping Frequency - kHz Chopping Frequency - kHz 520 500 480 460 440 430 420 410 440 400 -75 420 0 1 6 2 3 4 5 |VDD | - Supply Voltage - V 7 8 - 50 - 25 75 100 0 25 50 TA - Free-Air Temperature - C Figure 16 Figure 15 SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY CURRENT vs FREE-AIR TEMPERATURE 2 2 VO = 0 No Load VDD = 7.5 V IIDD DD - Supply Current - mA 1.6 IIDD DD - Supply Current - mA 125 TA = 25C 1.2 TA = - 55C 0.8 TA = 125C 1.6 VDD = 5 V 1.2 VDD = 2.5 V 0.8 0.4 0.4 VO = 0 No Load 0 0 1 2 3 4 5 6 7 8 0 -75 - 50 - 25 0 25 50 75 100 125 TA - Free-Air Temperature - C |VDD | - Supply Voltage - V Figure 18 Figure 17 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 17 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS SHORT-CIRCUIT OUTPUT CURRENT vs SUPPLY VOLTAGE SHORT-CIRCUIT OUTPUT CURRENT vs FREE-AIR TEMPERATURE 15 VO = 0 TA = 25C IOS I OS - Short-Circuit Output Current - mA IOS I OS - Short-Circuit Output Current - mA 12 8 4 VID = - 100 mV 0 -4 -8 VID = 100 mV -12 0 1 6 2 3 4 5 |VDD | - Supply Voltage - V 7 10 5 VID = - 100 mV 0 -5 VID = 100 mV -10 -15 -75 8 VDD = 5 V VO = 0 75 100 - 50 - 25 0 25 50 TA - Free-Air Temperature - C Figure 19 Figure 20 SLEW RATE vs FREE-AIR TEMPERATURE SLEW RATE vs SUPPLY VOLTAGE 4 4 SR - SR - VDD = 5 V RL = 10 k CL = 100 pF 3 SR - Slew Rate - V?us V/ s 3 SR - Slew Rate - V?us V/ s 125 SR + 2 1 SR + 2 1 RL = 10 k CL = 100 pF TA = 25C 0 0 1 6 2 3 4 5 |VDD | - Supply Voltage - V 7 8 0 75 100 -75 - 50 - 25 0 25 50 TA - Free-Air Temperature - C Figure 21 Figure 22 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 18 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 125 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE 100 4 75 3 50 2 VO VO - Output Voltage - V VO VO - Output Voltage - mV VOLTAGE-FOLLOWER SMALL-SIGNAL PULSE RESPONSE VDD = 5 V RL = 10 k CL = 100 pF TA = 25C 25 0 - 25 - 50 VDD = 5 V RL = 10 k CL = 100 pF TA = 25C 1 0 -1 -2 -3 -75 -100 0 1 2 3 4 5 6 -4 7 0 Figure 23 VN(PP) - Peak-to-Peak Input Noise Voltage - V VN(PP) uV VN(PP) VN(PP) - Peak-to-Peak Input Noise Voltage -uV V VDD = 5 V RS = 20 f = 0 to 1 Hz TA = 25C 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 4 15 20 25 30 35 40 PEAK-TO-PEAK INPUT NOISE VOLTAGE vs CHOPPING FREQUENCY 1.8 2 10 Figure 24 PEAK-TO-PEAK INPUT NOISE VOLTAGE vs CHOPPING FREQUENCY 0 5 t - Time - s t - Time - s 6 8 10 fch - Chopping Frequency - kHz 5 VDD = 5 V RS = 20 f = 0 to 1 Hz TA = 25C 4 3 2 1 0 0 8 2 4 6 fch - Chopping Frequency - kHz 10 Figure 26 Figure 25 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 19 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS GAIN-BANDWIDTH PRODUCT vs SUPPLY VOLTAGE 100 2.1 80 Gain-Bandwidth Product - MHz V Vn nV/HzHz n - Equivalent Input Noise Voltage - nV/ EQUIVALENT INPUT NOISE VOLTAGE vs FREQUENCY 60 40 20 VDD = 5 V RS = 20 TA = 25C 0 1 10 100 RL = 10 k CL = 100 pF TA = 25C 2 1.9 1.8 1k 0 1 f - Frequency - Hz 7 8 2 3 4 5 6 7 |VCC | - Supply Voltage - V 8 2 Figure 27 5 6 PHASE MARGIN vs SUPPLY VOLTAGE 50 2.6 VDD = 5 V RL = 10 k CL = 100 pF 2.4 RL = 10 k CL = 100 pF TA = 25C 48 om m - Phase Margin Gain-Bandwidth Product - MHz 4 Figure 28 GAIN-BANDWIDTH PRODUCT vs FREE-AIR TEMPERATURE 2.2 2 1.8 46 44 42 1.4 1.2 -75 3 |VCC | - Supply Voltage - V 40 - 50 - 25 0 25 50 75 100 125 0 1 TA - Free-Air Temperature - C Figure 29 Figure 30 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 20 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 TYPICAL CHARACTERISTICS PHASE MARGIN vs LOAD CAPACITANCE PHASE MARGIN vs FREE-AIR TEMPERATURE 50 60 50 om m - Phase Margin om m - Phase Margin 48 46 44 42 VDD = 5 V RL = 10 k TA = 25C VDD = 5 V RL = 10 k CL = 100 pF 40 -75 - 50 - 25 40 30 20 10 0 0 25 50 75 100 125 0 200 TA - Free-Air Temperature - C 400 600 800 1000 CL - Load Capacitance - pF Figure 32 Figure 31 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. APPLICATION INFORMATION capacitor selection and placement The two important factors to consider when selecting external capacitors CXA and CXB are leakage and dielectric absorption. Both factors can cause system degradation, negating the performance advantages realized by using the TLC2652. Degradation from capacitor leakage becomes more apparent with the increasing temperatures. Low-leakage capacitors and standoffs are recommended for operation at TA = 125C. In addition, guard bands are recommended around the capacitor connections on both sides of the printed circuit board to alleviate problems caused by surface leakage on circuit boards. Capacitors with high dielectric absorption tend to take several seconds to settle upon application of power, which directly affects input offset voltage. In applications where fast settling of input offset voltage is needed, it is recommended that high-quality film capacitors, such as mylar, polystyrene, or polypropylene, be used. In other applications, however, a ceramic or other low-grade capacitor can suffice. Unlike many choppers available today, the TLC2652 is designed to function with values of CXA and CXB in the range of 0.1 F to 1 F without degradation to input offset voltage or input noise voltage. These capacitors should be located as close as possible to the CXA and CXB pins and returned to either VDD - or C RETURN. On many choppers, connecting these capacitors to VDD - causes degradation in noise performance. This problem is eliminated on the TLC2652. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 21 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 APPLICATION INFORMATION internal/external clock When large differential input voltage conditions are applied to the TLC2652, the nulling loop attempts to prevent the output from saturating by driving CXA and CXB to internally-clamped voltage levels. Once the overdrive condition is removed, a period of time is required to allow the built-up charge to dissipate. This time period is defined as overload recovery time (see Figure 33). Typical overload recovery time for the TLC2652 is significantly faster than competitive products; however, if required, this time can be reduced further by use of internal clamp circuitry accessible through CLAMP if required. VII - Input Voltage - mV V overload recovery/output clamp VO V O - Output Voltage - V The TLC2652 has an internal clock that sets the chopping frequency to a nominal value of 450 Hz. On 8-pin packages, the chopping frequency can only be controlled by the internal clock; however, on all 14-pin packages and the 20-pin FK package, the device chopping frequency can be set by the internal clock or controlled externally by use of the INT/EXT and CLK IN pins. To use the internal 450-Hz clock, no connection is necessary. If external clocking is desired, connect INT/EXT to VDD - and the external clock to CLK IN. The external clock trip point is 2.5 V above the negative rail; however, CLK IN can be driven from the negative rail to 5 V above the negative rail. If this level is exceeded, damage could occur to the device unless the current into CLK IN is limited to 5 mA. When operating in the single-supply configuration, this feature allows the TLC2652 to be driven directly by 5-V TTL and CMOS logic. A divide-by0 two frequency divider interfaces with CLK IN and VDD = 5 V sets the clock chopping frequency. The duty cycle TA = 25 C of the external clock is not critical but should be kept between 30% and 60%. -5 0 - 50 0 10 20 30 40 50 60 70 80 t - Time - ms Figure 33. Overload Recovery The clamp is a switch that is automatically activated when the output is approximately 1 V from either supply rail. When connected to the inverting input (in parallel with the closed-loop feedback resistor), the closed-loop gain is reduced, and the TLC2652 output is prevented from going into saturation. Since the output must source or sink current through the switch (see Figure 7), the maximum output voltage swing is slightly reduced. thermoelectric effects To take advantage of the extremely low offset voltage drift of the TLC2652, care must be taken to compensate for the thermoelectric effects present when two dissimilar metals are brought into contact with each other (such as device leads being soldered to a printed circuit board). Dissimilar metal junctions can produce thermoelectric voltages in the range of several microvolts per degree Celsius (orders of magnitude greater than the 0.01-V/C typical of the TLC2652). To help minimize thermoelectric effects, careful attention should be paid to component selection and circuit-board layout. Avoid the use of nonsoldered connections (such as sockets, relays, switches, etc.) in the input signal path. Cancel thermoelectric effects by duplicating the number of components and junctions in each device input. The use of low-thermoelectric-coefficient components, such as wire-wound resistors, is also beneficial. 22 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 APPLICATION INFORMATION latch-up avoidance Because CMOS devices are susceptible to latch-up due to their inherent parasitic thyristors, the TLC2652 inputs and output are designed to withstand - 100-mA surge currents without sustaining latch-up; however, techniques to reduce the chance of latch-up should be used whenever possible. Internal protection diodes should not, by design, be forward biased. Applied input and output voltages should not exceed the supply voltage by more than 300 mV. Care should be exercised when using capacitive coupling on pulse generators. Supply transients should be shunted by the use of decoupling capacitors (0.1 F typical) located across the supply rails as close to the device as possible. The current path established if latch-up occurs is usually between the supply rails and is limited only by the impedance of the power supply and the forward resistance of the parasitic thyristor. The chance of latch-up occurring increases with increasing temperature and supply voltage. electrostatic discharge protection The TLC2652 incorporates internal ESD-protection circuits that prevent functional failures at voltages at or below 2000 V. Care should be exercised in handling these devices, as exposure to ESD may result in degradation of the device parametric performance. theory of operation Chopper-stabilized operational amplifiers offer the best dc performance of any monolithic operational amplifier. This superior performance is the result of using two operational amplifiers, a main amplifier and a nulling amplifier, plus oscillator-controlled logic and two external capacitors to create a system that behaves as a single amplifier. With this approach, the TLC2652 achieves submicrovolt input offset voltage, submicrovolt noise voltage, and offset voltage variations with temperature in the nV/C range. The TLC2652 on-chip control logic produces two dominant clock phases: a nulling phase and an amplifying phase. The term chopper-stabilized derives from the process of switching between these two clock phases. Figure 34 shows a simplified block diagram of the TLC2652. Switches A and B are make-before-break types. During the nulling phase, switch A is closed shorting the nulling amplifier inputs together and allowing the nulling amplifier to reduce its own input offset voltage by feeding its output signal back to an inverting input node. Simultaneously, external capacitor CXA stores the nulling potential to allow the offset voltage of the amplifier to remain nulled during the amplifying phase. Main Amplifier IN + + IN - - VO B B A CXB + VDD - - Null Amplifier A CXA Figure 34. TLC2652 Simplified Block Diagram POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 23 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 APPLICATION INFORMATION theory of operation (continued) During the amplifying phase, switch B is closed connecting the output of the nulling amplifier to a noninverting input of the main amplifier. In this configuration, the input offset voltage of the main amplifier is nulled. Also, external capacitor CXB stores the nulling potential to allow the offset voltage of the main amplifier to remain nulled during the next nulling phase. This continuous chopping process allows offset voltage nulling during variations in time and temperature over the common-mode input voltage range and power supply range. In addition, because the low-frequency signal path is through both the null and main amplifiers, extremely high gain is achieved. The low-frequency noise of a chopper amplifier depends on the magnitude of the component noise prior to chopping and the capability of the circuit to reduce this noise while chopping. The use of the Advanced LinCMOS process, with its low-noise analog MOS transistors and patent-pending input stage design, significantly reduces the input noise voltage. The primary source of nonideal operation in chopper-stabilized amplifiers is error charge from the switches. As charge imbalance accumulates on critical nodes, input offset voltage can increase, especially with increasing chopping frequency. This problem has been significantly reduced in the TLC2652 by use of a patent-pending compensation circuit and the Advanced LinCMOS process. The TLC2652 incorporates a feed-forward design that ensures continuous frequency response. Essentially, the gain magnitude of the nulling amplifier and compensation network crosses unity at the break frequency of the main amplifier. As a result, the high-frequency response of the system is the same as the frequency response of the main amplifier. This approach also ensures that the slewing characteristics remain the same during both the nulling and amplifying phases. 24 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 MECHANICAL DATA D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PIN SHOWN 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 14 0.010 (0,25) M 8 0.008 (0,20) NOM 0.244 (6,20) 0.228 (5,80) 0.157 (4,00) 0.150 (3,81) Gage Plane 0.010 (0,25) 1 7 0- 8 A 0.044 (1,12) 0.016 (0,40) Seating Plane 0.069 (1,75) MAX 0.010 (0,25) 0.004 (0,10) PINS ** 0.004 (0,10) 8 14 16 A MAX 0.197 (5,00) 0.344 (8,75) 0.394 (10,00) A MIN 0.189 (4,80) 0.337 (8,55) 0.386 (9,80) DIM 4040047 / D 10/96 NOTES: A. B. C. D. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15). Falls within JEDEC MS-012 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 25 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 MECHANICAL DATA FK (S-CQCC-N**) LEADLESS CERAMIC CHIP CARRIER 28 TERMINAL SHOWN 18 17 16 15 14 13 NO. OF TERMINALS ** 12 19 11 20 10 A B MIN MAX MIN MAX 20 0.342 (8,69) 0.358 (9,09) 0.307 (7,80) 0.358 (9,09) 28 0.442 (11,23) 0.458 (11,63) 0.406 (10,31) 0.458 (11,63) 21 9 22 8 44 0.640 (16,26) 0.660 (16,76) 0.495 (12,58) 0.560 (14,22) 23 7 52 0.739 (18,78) 0.761 (19,32) 0.495 (12,58) 0.560 (14,22) 24 6 68 25 5 0.938 (23,83) 0.962 (24,43) 0.850 (21,6) 0.858 (21,8) 84 1.141 (28,99) 1.165 (29,59) 1.047 (26,6) 1.063 (27,0) B SQ A SQ 26 27 28 1 2 3 4 0.080 (2,03) 0.064 (1,63) 0.020 (0,51) 0.010 (0,25) 0.020 (0,51) 0.010 (0,25) 0.055 (1,40) 0.045 (1,14) 0.045 (1,14) 0.035 (0,89) 0.045 (1,14) 0.035 (0,89) 0.028 (0,71) 0.022 (0,54) 0.050 (1,27) 4040140 / D 10/96 NOTES: A. B. C. D. E. 26 All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a metal lid. The terminals are gold plated. Falls within JEDEC MS-004 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 MECHANICAL DATA J (R-GDIP-T**) CERAMIC DUAL-IN-LINE PACKAGE 14 PIN SHOWN PINS ** 14 16 18 20 A MAX 0.310 (7,87) 0.310 (7,87) 0.310 (7,87) 0.310 (7,87) A MIN 0.290 (7,37) 0.290 (7,37) 0.290 (7,37) 0.290 (7,37) B MAX 0.785 (19,94) 0.785 (19,94) 0.910 (23,10) 0.975 (24,77) B MIN 0.755 (19,18) 0.755 (19,18) C MAX 0.300 (7,62) 0.300 (7,62) 0.300 (7,62) 0.300 (7,62) C MIN 0.245 (6,22) 0.245 (6,22) 0.245 (6,22) 0.245 (6,22) DIM B 14 8 C 1 7 0.065 (1,65) 0.045 (1,14) 0.100 (2,54) 0.070 (1,78) 0.020 (0,51) MIN 0.930 (23,62) A 0.200 (5,08) MAX Seating Plane 0.130 (3,30) MIN 0.100 (2,54) 0-15 0.023 (0,58) 0.015 (0,38) 0.014 (0,36) 0.008 (0,20) 4040083/D 08/98 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a ceramic lid using glass frit. Index point is provided on cap for terminal identification on press ceramic glass frit seal only. Falls within MIL STD 1835 GDIP1-T14, GDIP1-T16, GDIP1-T18, GDIP1-T20, and GDIP1-T22. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 27 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 MECHANICAL DATA JG (R-GDIP-T8) CERAMIC DUAL-IN-LINE PACKAGE 0.400 (10,20) 0.355 (9,00) 8 5 0.280 (7,11) 0.245 (6,22) 1 4 0.065 (1,65) 0.045 (1,14) 0.310 (7,87) 0.290 (7,37) 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.130 (3,30) MIN 0.063 (1,60) 0.015 (0,38) 0.100 (2,54) 0-15 0.023 (0,58) 0.015 (0,38) 0.014 (0,36) 0.008 (0,20) 4040107/C 08/96 NOTES: A. B. C. D. E. 28 All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a ceramic lid using glass frit. Index point is provided on cap for terminal identification on press ceramic glass frit seal only. Falls within MIL-STD-1835 GDIP1-T8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 MECHANICAL DATA N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 16 PIN SHOWN PINS ** 14 16 18 20 A MAX 0.775 (19,69) 0.775 (19,69) 0.920 (23.37) 0.975 (24,77) A MIN 0.745 (18,92) 0.745 (18,92) 0.850 (21.59) 0.940 (23,88) DIM A 16 9 0.260 (6,60) 0.240 (6,10) 1 8 0.070 (1,78) MAX 0.035 (0,89) MAX 0.310 (7,87) 0.290 (7,37) 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.010 (0,25) M 0- 15 0.010 (0,25) NOM 14/18 PIN ONLY 4040049/C 08/95 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 (20 pin package is shorter then MS-001.) POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 29 TLC2652, TLC2652A, TLC2652Y Advanced LinCMOS PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS SLOS019D - SEPTEMBER 1988 - REVISED APRIL 2001 MECHANICAL DATA P (R-PDIP-T8) PLASTIC DUAL-IN-LINE PACKAGE 0.400 (10,60) 0.355 (9,02) 8 5 0.260 (6,60) 0.240 (6,10) 1 4 0.070 (1,78) MAX 0.310 (7,87) 0.290 (7,37) 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0- 15 0.010 (0,25) M 0.010 (0,25) NOM 4040082 / B 03/95 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. 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