ICL7621, ICL7641, ICL7642 S E M I C O N D U C T O R Dual/Quad, Low Power CMOS Operational Amplifiers November 1996 Features Description * Wide Operating Voltage Range. . . . . . . . . . 1V to 8V The ICL761X/762X/764X series is a family of monolithic CMOS operational amplifiers. These devices provide the designer with high performance operation at low supply voltages and selectable quiescent currents. They are an ideal design tool when ultra low input current and low power dissipation are desired. * High Input Impedance . . . . . . . . . . . . . . . . . . . . . . 1012 * Input Current Lower Than BIFETs . . . . . . . . . 1pA (Typ) * Output Voltage Swing . . . . . . . . . . . . . . . . . . . V+ and V* Available as Duals and Quads (Refer to ICL7611 for Singles) The basic amplifier will operate at supply voltages ranging from 1V to 8V, and may be operated from a single Lithium cell. The output swing ranges to within a few millivolts of the supply voltages. * Low Power Replacement for Many Standard Op Amps Applications The quiescent supply current of these amplifiers is set to 3 different ranges at the factory. Both amps of the dual ICL7621 are set to an IQ of 100A, while each amplifier of the quad ICL7641 and ICL7642 are set to an IQ of 1mA and 10A respectively. This results in power consumption as low as 20W per amplifier. * Portable Instruments * Telephone Headsets * Hearing Aid/Microphone Amplifiers * Meter Amplifiers Of particular significance is the extremely low (1pA) input current, input noise current of 0.01pA/Hz, and 1012 input impedance. These features optimize performance in very high source impedance applications. * Medical Instruments * High Impedance Buffers The inputs are internally protected. Outputs are fully protected against short circuits to ground or to either supply. AC performance is excellent, with a slew rate of 1.6V/s, and unity gain bandwidth of 1MHz at IQ = 1mA. Because of the low power dissipation, junction temperature rise and drift are quite low. Applications utilizing these features may include stable instruments, extended life designs, or high density packages. Pinouts (See Ordering Information on Next Page) ICL7621 (PDIP, SOIC) TOP VIEW ICL7621 (METAL CAN) TOP VIEW ICL7641 (PDIP) ICL7642 (PDIP) TOP VIEW V+ 2 6 3 5 -INB 6 V- OUTB 7 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. 3-700 11 V- +INB 5 +INB 13 -IND 12 +IND V+ 4 4 (c) Harris Corporation 1996 + +INA 3 -INB +INB +INA Copyright + -INA 2 14 OUTD 10 +INC + 5 -INA + -INB + 6 OUTB + + 4 + V- - OUTB 7 - 3 7 OUTA 1 1 - +INA - OUTA - 2 8 V+ - -INA 8 - 1 - OUTA 9 -INC 8 OUTC File Number 3403.1 ICL7621, ICL7641, ICL7642 Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. ICL7621ACPA 0 to 70 8 Ld PDIP - A Grade - IQ = 100A E8.3 ICL7621BCPA 0 to 70 8 Ld PDIP - B Grade - IQ = 100A E8.3 ICL7621DCPA 0 to 70 8 Ld PDIP - D Grade - IQ = 100A E8.3 ICL7621BCTV 0 to 70 8 Pin Metal Can - B Grade - IQ = 100A T8.C ICL7621DCTV 0 to 70 8 Pin Metal Can - D Grade - IQ = 100A T8.C ICL7621AMTV -55 to 125 8 Pin Metal Can - A Grade - IQ = 100A T8.C ICL7621BMTV -55 to 125 8 Pin Metal Can - B Grade - IQ = 100A T8.C ICL7621DMTV -55 to 125 8 Pin Metal Can - D Grade - IQ = 100A T8.C ICL7621DCBA 0 to 70 8 Ld SOIC - D Grade - IQ = 100A M8.15 ICL7621DCBA-T 0 to 70 8 Ld SOIC - D Grade - Tape and Reel - IQ = 100A M8.15 ICL7641CCPD 0 to 70 14 Ld PDIP - C Grade - IQ = 1mA E14.3 ICL7641ECPD 0 to 70 14 Ld PDIP - E Grade - IQ = 1mA E14.3 ICL7642CCPD 0 to 70 14 Ld PDIP - C Grade - IQ = 10A E14.3 ICL7642ECPD 0 to 70 14 Ld PDIP - E Grade - IQ = 10A E14.3 3-701 ICL7621, ICL7641, ICL7642 Absolute Maximum Ratings Thermal Information Supply Voltage V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3 to V+ +0.3V Differential Input Voltage (Note 1). . . . . . . . . . [(V+ +0.3) - (V- -0.3)]V Duration of Output Short Circuit (Note 2) . . . . . . . . . . . . . . Unlimited Thermal Resistance (Typical, Note 3) JA (oC/W) JC (oC/W) SOIC Package . . . . . . . . . . . . . . . . . . . 160 N/A Metal Can Package . . . . . . . . . . . . . . . 160 75 8 Lead PDIP Package . . . . . . . . . . . . . 120 N/A 14 Lead PDIP Package . . . . . . . . . . . . 80 N/A Maximum Junction Temperature (Hermetic Packages) . . . . . . . 175oC Maximum Junction Temperature (Plastic Package) . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . .. -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range ICL76XXM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC ICL76XXC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 70oC CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. Long term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time. 2. The outputs may be shorted to ground or to either supply, for VSUPPLY 10V. Care must be taken to insure that the dissipation rating is not exceeded. 3. JA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications PARAMETER Input Offset Voltage Temperature Coefficient of VOS Input Offset Current Input Bias Current VSUPPLY = 5V, Unless Otherwise Specified SYMBOL VOS TEST CONDITIONS RS 100k VOS/T RS 100k IOS IBIAS TEMP. (oC) ICL7621A ICL7621B ICL7621D MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS 25 - - 2 - - 5 - - 15 mV Full - - 3 - - 7 - - 20 mV - - 10 - - 15 - - 25 - V/oC 25 - 0.5 30 - 0.5 30 - 0.5 30 pA 0 to 70 - - 300 - - 300 - - 300 pA -55 to 125 - - 800 - 800 - 800 pA 25 - 1.0 50 - 1.0 50 - 1.0 50 pA 0 to 70 - - 400 - - 400 - - 400 pA -55 to 125 - - 4000 - - 4000 - - 4000 pA Common Mode Voltage Range VCMR IQ = 100A 25 4.2 - - 4.2 - - 4.2 - - V Output Voltage Swing VOUT IQ = 100A, RL = 100k, 25 4.9 - - 4.9 - - 4.9 - - V 0 to 70 4.8 - - 4.8 - - 4.8 - - V -55 to 125 4.5 - - 4.5 - - 4.5 - - V Large Signal Voltage Gain Unity Gain Bandwidth AVOL GBW VO = 4.0V, RL = 100k , IQ = 100A IQ = 100A 25 86 102 - 80 102 - 80 102 - dB 0 to 70 80 - - 75 - - 75 - - dB -55 to 125 74 - - 68 - - 68 - - dB 25 - 0.48 - - 0.48 - - 0.48 - MHz 25 - 1012 - - 1012 - - 1012 - Input Resistance RIN Common Mode Rejection Ratio CMRR RS 100k, IQ = 100A 25 76 91 - 70 91 - 70 91 - dB Power Supply Rejection Ratio (VSUPPLY = 8V to 2V) PSRR RS 100k, IQ = 100A 25 80 86 - 80 86 - 80 86 - dB eN RS = 100, f = 1kHz 25 - 100 - - 100 - - 100 - nV/Hz Input Referred Noise Voltage 3-702 ICL7621, ICL7641, ICL7642 Electrical Specifications PARAMETER Input Referred Noise Current VSUPPLY = 5V, Unless Otherwise Specified (Continued) SYMBOL iN TEST CONDITIONS TEMP. (oC) RS = 100, f = 1kHz ICL7621A ICL7621B ICL7621D MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS 25 - 0.01 - - 0.01 - - 0.01 - pA/Hz Supply Current (Per Amplifier) ISUPPLY No Signal, No Load, IQ = 100A 25 - 0.1 0.25 - 0.1 0.25 - 0.1 0.25 mA Channel Separation VO1/VO2 AV = 100 25 - 120 - - 120 - - 120 - dB Slew Rate SR AV = 1, CL = 100pF VIN = 8VP-P, IQ = 100A, RL = 100k 25 - 0.16 - - 0.16 - - 0.16 - V/s Rise Time tR VIN = 50mV, CL = 100pF IQ = 100A, RL = 100k 25 - 2 - - 2 - - 2 - s Overshoot Factor OS VIN = 50mV, CL = 100pF IQ = 100A, RL = 100k 25 - 10 - - 10 - - 10 - % Electrical Specifications PARAMETER Input Offset Voltage Temperature Coefficient of VOS Input Offset Current Input Bias Current VSUPPLY = 5V, Unless Otherwise Specified SYMBOL VOS TEST CONDITIONS TEMP. (oC) TYP MAX UNITS - - 20 mV 15 - - 25 mV 20 - - 30 - V/oC - 0.5 30 - 0.5 30 pA 0 to 70 - - 300 - - 300 pA -55 to 125 - - 800 - 800 pA 25 - 1.0 50 - 1.0 50 pA 0 to 70 - - 500 - - 500 pA -55 to 125 - - 4000 - - 4000 pA IQ = 10A, ICL7642 25 4.4 - - 4.4 - - V IQ = 1mA, ICL7641 25 3.7 - - 3.7 - - V ICL7642, IQ = 10A, RL = 1M 25 4.9 - - 4.9 - - V 0 to 70 4.8 - - 4.8 - - V -55 to 125 4.7 - - 4.7 - - V 25 4.5 - - 4.5 - - V 0 to 70 4.3 - - 4.3 - - V -55 to 125 4.0 - - 4.0 - - V RS 100k VOS/T RS 100k IOS IBIAS Common Mode Voltage Range VCMR Output Voltage Swing VOUT ICL7641C, ICL7642C ICL7641E, ICL7642E ICL7641, IQ = 1mA, RL = 10k 3-703 MIN TYP MAX MIN 25 - - 10 Full - - - - 25 ICL7621, ICL7641, ICL7642 Electrical Specifications PARAMETER Large Signal Voltage Gain VSUPPLY = 5V, Unless Otherwise Specified (Continued) TEST CONDITIONS TEMP. (oC) TYP MAX UNITS 80 104 - dB - 75 - - dB - - 68 - - dB 76 98 - 76 98 - dB 0 to 70 72 - - 72 - - dB -55 to 125 68 - - 68 - - dB ICL 7642, IQ = 10A 25 - 0.044 - - 0.044 - MHz ICL 7641, IQ = 1mA 25 - 1.4 - - 1.4 - MHz 25 - 1012 - - 1012 - ICL7642, RS 100k, IQ = 10A 25 70 96 - 70 96 - dB ICL7641, RS 100k, IQ = 1mA 25 60 87 - 60 87 - dB ICL7642, RS 100k, IQ = 10A 25 80 94 - 80 94 - dB ICL7641, RS 100k, IQ = 1mA 25 70 77 - 70 77 - dB SYMBOL ICL7642, VO = 4V, RL = 1M, IQ = 10A AVOL ICL7641, VO = 4V, RL = 10k, IQ = 1mA Unity Gain Bandwidth Input Resistance GBW RIN Common Mode Rejection Ratio CMRR Power Supply Rejection Ratio (VSUPPLY = 8V to 2V) PSRR ICL7641C, ICL7642C ICL7641E, ICL7642E MIN TYP MAX MIN 25 80 104 - 0 to 70 75 - -55 to 125 68 25 Input Referred Noise Voltage eN RS = 100, f = 1kHz 25 - 100 - - 100 - nV/Hz Input Referred Noise Current iN RS = 100, f = 1kHz 25 - 0.01 - - 0.01 - pA/Hz Supply Current (Per Amplifier) (No Signal, No Load) ISUPPLY ICL7642, IQ = 10A Low Bias 25 - 0.01 0.03 - 0.01 0.03 mA ICL7641, IQ = 1mA High Bias 25 - 1.0 2.5 - 1.0 2.5 mA Channel Separation VO1/VO2 AV = 100 25 - 120 - - 120 - dB ICL7642, IQ = 10A, RL = 1M 25 - 0.016 - - 0.016 - V/s ICL7641, IQ = 1mA, RL = 10k 25 - 1.6 - - 1.6 - V/s ICL7642, IQ = 10A, RL = 1M 25 - 20 - - 20 - s ICL7641, IQ = 1mA, RL = 10k 25 - 0.9 - - 0.9 - s ICL7642, IQ = 10A, RL = 1M 25 - 5 - - 5 - % ICL7641, IQ = 1mA, RL = 10k 25 - 40 - - 40 - % TYP MAX UNITS Slew Rate (AV = 1, CL = 100pF, VIN = 8VP-P) SR Rise Time (VIN = 50mV, CL = 100pF) tR Overshoot Factor (VIN = 50mV, CL = 100pF) OS Electrical Specifications PARAMETERS Input Offset Voltage Temperature Coefficient of VOS Input Offset Current Input Bias Current Common Mode Voltage Range VSUPPLY = 1V, IQ = 10A, Unless Otherwise Specified TEST CONDITIONS SYMBOL VOS RS 100k VOS/T RS 100k IOS IBIAS VCMR 3-704 TEMP. MIN (oC) ICL7642C 25 - - 10 mV Full - - 12 mV - - 20 - V/oC 25 - 0.5 30 pA 0 to 70 - - 300 pA 25 - 1.0 50 pA 0 to 70 - - 500 pA 25 0.6 - - V ICL7621, ICL7641, ICL7642 Electrical Specifications VSUPPLY = 1V, IQ = 10A, Unless Otherwise Specified (Continued) PARAMETERS TEST CONDITIONS SYMBOL Output Voltage Swing VOUT Large Signal Voltage Gain VO = 0.1V, RL = 1M TYP MAX UNITS - 0.98 - V 0 to 70 - 0.96 - V 25 - 90 - dB 0 to 70 - 80 - dB 25 - 0.044 - MHz 25 - 1012 - 25 - 80 - dB 25 - 80 - dB GBW Input Resistance ICL7642C 25 RL = 1M AVOL Unity Gain Bandwidth TEMP. MIN (oC) RIN RS 100k Common Mode Rejection Ratio CMRR Power Supply Rejection Ratio PSRR Input Referred Noise Voltage eN RS = 100, f = 1kHz 25 - 100 - nV/Hz Input Referred Noise Current iN RS = 100, f = 1kHz 25 - 0.01 - pA/Hz Supply Current (Per Amplifier) ISUPPLY No Signal, No Load 25 - 6 15 A Channel Separation VO1/VO2 AV = 100 25 - 120 - dB Slew Rate SR AV = 1, CL = 100pF, VIN = 0.2VP-P, RL = 1M 25 - 0.016 - V/s Rise Time tR VIN = 50mV, CL = 100pF RL = 1M 25 - 20 - s Overshoot Factor OS VIN = 50mV, CL = 100pF, RL = 1M 25 - 5 - % Schematic Diagram IQ SETTING STAGE INPUT STAGE 3K C QP5 QP3 6.3V QP7 V- 100K QP2 V+ A 900K 3K QP1 OUTPUT STAGE QP8 QP6 QP4 V+ +INPUT QP9 QN1 QN2 CFF = 9pF OUTPUT VV+ CC = 33pF -INPUT QN9 QN7 QN4 V- QN10 QN6 QN5 IQ ICL7621 C, E 100A ICL7641 C, G 1mA ICL7642 A, E 10A 6.3V V+ QN3 TABLE OF JUMPERS QN11 E QN8 G V- 3-705 ICL7621, ICL7641, ICL7642 Application Information Static Protection Frequency Compensation All devices are static protected by the use of input diodes. However, strong static fields should be avoided, as it is possible for the strong fields to cause degraded diode junction characteristics, which may result in increased input leakage currents. The ICL76XX are internally compensated, and are stable for closed loop gains as low as unity with capacitive loads up to 100pF. Operation At VSUPPLY = 1V Operation at VSUPPLY = 1V is guaranteed for the ICL7642C only. Latchup Avoidance Junction-isolated CMOS circuits employ configurations which produce a parasitic 4-layer (PNPN) structure. The 4layer structure has characteristics similar to an SCR, and under certain circumstances may be triggered into a low impedance state resulting in excessive supply current. To avoid this condition, no voltage greater than 0.3V beyond the supply rails may be applied to any pin. In general, the op amp supplies must be established simultaneously with, or before any input signals are applied. If this is not possible, the drive circuits must limit input current flow to 2mA to prevent latchup. Choosing the Proper IQ Each device in the ICL76XX family has a similar IQ setup scheme, which allows the amplifier to be set to nominal quiescent currents of 10A, 100A or 1mA. These current settings change only very slightly over the entire supply voltage range. The ICL7611/12 have an external IQ control terminal, permitting user selection of each amplifiers' quiescent current. The ICL7621 and ICL7641/7642 have fixed IQ settings: Output swings to within a few millivolts of the supply rails are achievable for RL 1M. Guaranteed input CMVR is 0.6V minimum and typically +0.9V to -0.7V at VSUPPLY = 1V. For applications where greater common mode range is desirable, refer to the ICL7612 data sheet. Typical Applications The user is cautioned that, due to extremely high input impedances, care must be exercised in layout, construction, board cleanliness, and supply filtering to avoid hum and noise pickup. Note that in no case is IQ shown. The value of IQ must be chosen by the designer with regard to frequency response and power dissipation. VIN ICL76XX + VOUT RL 10k ICL7621 (Dual) - IQ = 100A ICL7641 (Quad) - IQ = 1mA ICL7642 (Quad) - IQ = 10A FIGURE 1. SIMPLE FOLLOWER NOTE: The output current available is a function of the quiescent current setting. For maximum peak-to-peak output voltage swings into low impedance loads, IQ of 1mA should be selected. +5 VIN +5 - ICL76XX Output Stage and Load Driving Considerations VOUT Each amplifiers' quiescent current flows primarily in the output stage. This is approximately 70% of the IQ settings. This allows output swings to almost the supply rails for output loads of 1M, 100k, and 10k, using the output stage in a highly linear class A mode. In this mode, crossover distortion is avoided and the voltage gain is maximized. However, the output stage can also be operated in Class AB for higher output currents. (See graphs under Typical Operating Characteristics). During the transition from Class A to Class B operation, the output transfer characteristic is non-linear and the voltage gain decreases. 3-706 100k + TO CMOS OR LPTTL LOGIC 1M FIGURE 2. LEVEL DETECTOR ICL7621, ICL7641, ICL7642 - 1M 1/2 ICL7621 1F + 1/2 ICL7621 + 1M + 1M VV+ DUTY CYCLE VOUT ICL76XX + 680k WAVEFORM GENERATOR NOTE: Since the output range swings exactly from rail to rail, frequency and duty cycle are virtually independent of power supply variations. NOTE: Low leakage currents allow integration times up to several hours. FIGURE 3. PHOTOCURRENT INTEGRATOR FIGURE 4. TRIANGLE/SQUARE WAVE GENERATOR 1M +8V VOH 0.5F VIN 10k 20k 2.2M + 1/2 ICL7621 10F TO SUCCEEDING INPUT STAGE 20k 1.8k = 5% SCALE ADJUST - TA = 125oC + V+ OUT - VOL V- - V+ 1/2 ICL7621 + COMMON -8V FIGURE 5. AVERAGING AC TO DC CONVERTER FOR A/D CONVERTERS SUCH AS ICL7106, ICL7107, ICL7109, ICL7116, ICL7117 FIGURE 6. BURN-IN AND LIFE TEST CIRCUIT 0.2F 0.2F 30k 160k + 1/2 ICL7621 0.2F 680k 100k 51k + 1/2 ICL7621 - 360k INPUT 0.1F 360k 0.2F 1M 0.1F OUTPUT 1M NOTE 4 NOTE 4 NOTES: 4. Small capacitors (25 - 50pF) may be needed for stability in some cases. 5. The low bias currents permit high resistance and low capacitance values to be used to achieve low frequency cutoff. fC = 10Hz, AVCL = 4, Passband ripple = 0.1dB. FIGURE 7. FIFTH ORDER CHEBYCHEV MULTIPLE FEEDBACK LOW PASS FILTER 3-707 ICL7621, ICL7641, ICL7642 Typical Performance Curves 104 TA = 25oC NO LOAD NO SIGNAL V+ - V- = 10V NO LOAD NO SIGNAL IQ = 1mA SUPPLY CURRENT (A) SUPPLY CURRENT (A) 10K 1K IQ = 100A 100 IIQQ == 10A 1mA 10 1 0 2 4 6 8 10 SUPPLY VOLTAGE (V) 12 14 DIFFERENTIAL VOLTAGE GAIN (kV/V) INPUT BIAS CURRENT (pA) 100 10 1.0 0 25 50 75 FREE-AIR TEMPERATURE (oC) 100 COMMON MODE REJECTION RATIO (dB) IQ = 100A IQ = 1mA 104 0 45 PHASE SHIFT (IQ = 1mA) 90 135 IQ = 10A 10 10 100 1K 10K FREQUENCY (Hz) 100K 180 1M FIGURE 12. LARGE SIGNAL FREQUENCY RESPONSE PHASE SHIFT (DEGREES) DIFFERENTIAL VOLTAGE GAIN (V/V) TA = 25oC VSUPPLY = 15V 1.0 0 25 50 75 FREE-AIR TEMPERATURE (oC) 100 125 VSUPPLY = 10V VOUT = 8V RL = 1M IQ = 10A 100 RL = 100k IQ = 100A RL = 10k IQ = 1mA 10 -50 -25 25 0 50 75 100 125 FIGURE 11. LARGE SIGNAL DIFFERENTIAL VOLTAGE GAIN vs FREE-AIR TEMPERATURE 105 1 0.1 -25 FREE-AIR TEMPERATURE (oC) 107 102 IQ = 10A 10 1 -75 125 FIGURE 10. INPUT BIAS CURRENT vs TEMPERATURE 103 IQ = 100A 1000 VS = 5V 106 102 FIGURE 9. SUPPLY CURRENT PER AMPLIFIER vs FREE-AIR TEMPERATURE 1000 -25 IQ = 1mA 1 -50 16 FIGURE 8. SUPPLY CURRENT PER AMPLIFIER vs SUPPLY VOLTAGE 0.1 -50 103 105 VSUPPLY = 10V 100 IQ = 10A 95 IQ = 100A 90 IQ = 1mA 85 80 75 70 -75 -50 -25 0 25 50 75 100 125 FREE-AIR TEMPERATURE (oC) FIGURE 13. COMMON MODE REJECTION RATIO vs FREE-AIR TEMPERATURE 3-708 ICL7621, ICL7641, ICL7642 (Continued) EQUIVALENT INPUT NOISE VOLTAGE (nV/Hz) SUPPLY VOLTAGE REJECTION RATIO (dB) Typical Performance Curves 100 VSUPPLY = 10V IQ = 1mA 95 90 IQ = 100A 85 IQ = 10A 80 75 70 65 -75 -50 -25 0 25 50 75 100 600 TA = 25oC 3V VSUPPLY 16V 500 400 300 200 100 125 0 10 100 1K FREQUENCY (Hz) FREE-AIR TEMPERATURE (oC) FIGURE 14. POWER SUPPLY REJECTION RATIO vs FREE-AIR TEMPERATURE 16 TA = 25oC 14 VSUPPLY = 8V 12 14 IQ = 1mA MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE (VP-P) MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE (VP-P) 100K FIGURE 15. EQUIVALENT INPUT NOISE VOLTAGE vs FREQUENCY 16 IQ = 10A IQ = 100A 10 8 VSUPPLY = 5V 6 4 2 VSUPPLY = 10V IQ = 1mA 12 10 8 TA = -55oC 6 TA = 25oC TA = 125oC 4 2 VSUPPLY = 2V 0 100 1K 10K 100K FREQUENCY (Hz) 1M 0 10K 10M FIGURE 16. OUTPUT VOLTAGE vs FREQUENCY 100K 1M FREQUENCY (Hz) 10M FIGURE 17. OUTPUT VOLTAGE vs FREQUENCY 12 16 TA = 25oC 14 10 MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE (VP-P) MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE (VP-P) 10K 12 RL = 100k - 1M 10 RL = 10k 8 6 4 2 4 6 8 10 12 SUPPLY VOLTAGE (V) 14 FIGURE 18. OUTPUT VOLTAGE vs SUPPLY VOLTAGE RL = 10k 8 6 RL = 2k 4 2 0 -75 16 RL = 100k VSUPPLY = 10V IQ = 1mA -50 -25 0 25 50 75 100 125 FREE-AIR TEMPERATURE (oC) FIGURE 19. OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 3-709 ICL7621, ICL7641, ICL7642 (Continued) 40 MAXIMUM OUTPUT SINK CURRENT (mA) MAXIMUM OUTPUT SOURCE CURRENT (mA) Typical Performance Curves IQ = 1mA 30 20 10 0 0.01 IQ = 10A 0.1 IQ = 100A 1.0 IQ = 1mA 10 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) FIGURE 20. OUTPUT SOURCE CURRENT vs SUPPLY VOLTAGE 16 10 8 6 4 2 6 TA = 25oC, VSUPPLY = 10V RL = 10k , CL = 100pF 4 2 OUTPUT 0 -2 INPUT -4 -6 0 0.1 1.0 10 LOAD RESISTANCE (k) 0 100 FIGURE 22. OUTPUT VOLTAGE vs LOAD RESISTANCE 2 4 6 TIME (s) 8 10 12 FIGURE 23. VOLTAGE FOLLOWER LARGE SIGNAL PULSE RESPONSE (IQ = 1mA) 8 8 TA = 25oC, VSUPPLY = 10V RL = 100k, CL = 100pF INPUT AND OUTPUT VOLTAGE (V) INPUT AND OUTPUT VOLTAGE (V) 16 FIGURE 21. OUTPUT SINK CURRENT vs SUPPLY VOLTAGE INPUT AND OUTPUT VOLTAGE (V) MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE (VP-P) 12 6 14 8 TA = 25oC V+ - V- = 10V IQ = 1mA 14 12 4 2 OUTPUT 0 -2 INPUT -4 -6 6 4 2 OUTPUT 0 INPUT -2 -4 -6 0 20 40 60 80 100 120 TIME (s) FIGURE 24. VOLTAGE FOLLOWER LARGE SIGNAL PULSE RESPONSE (IQ = 100A) TA = 25oC, VSUPPLY = 10V RL = 1M, CL = 100pF 0 200 400 600 800 1000 TIME (s) FIGURE 25. VOLTAGE FOLLOWER LARGE SIGNAL PULSE RESPONSE (IQ = 10A) 3-710 1200