Advanced Monolithic Systems AMSOP-77 ULTRA LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER RoHS compliant FEATURES APPLICATIONS • Outstanding Linearity • Low VOS overTemperature.…………………. 55µV Max • Excellent VOS Drift………………………. 0.6µV/°C Max • Ultra High Gain………………………….5000V/mV Min • High PSRR……………………………………3µV/V Max • Low Power Consumption…………………….60mW Max • High-Gain Instrumentation • Precision Data Acquisition • Precision Integrators • Precision Threshold Detectors • Biomedical Amplifiers GENERAL DESCRIPTION The AMSOP-77 is a precision operational amplifier with an ultra low input offset voltage. This device features a wide input voltage range of ±13V minimum, low input bias current, high impedance, high PSRR, high CMRR, excellent stability of offsets and gain over time and temperature. Exceptional gain linearity eliminates incorrectable system nonlinearities common in previous monolithic op amps, and provides superior performance in high closed-loop gain applications. Low cost, low noise, low offsets and high open-loop gain make the AMSOP-77 an excellent choice particularly for high-gain instrumentation applications. Other applications include precision data acquisition, precision integrators, threshold detectors and medical instrumentation. The AMSOP-77 is operational in the commercial temperature range of 0°C to 70°C and is available in the 8 lead SOIC and plastic dip (PDIP) packages. ORDERING INFORMATION: TOL. PACKAGE TYPE 8 LEAD SOIC ±25µV AMSOP-77ES ±60µV AMSOP-77FS ±100µV AMSOP-77GS 8 LEAD PDIP AMSOP-77EP AMSOP-77FP AMSOP-77GP OPERATING TEMPERATURE RANGE 0 to 70° C 0 to 70° C 0 to 70° C PIN CONNECTIONS 8 Lead SOIC/ 8Lead PDIP VOS TRIM 1 8 VOS TRIM -IN 2 7 V+ +IN 3 6 OUT V- 4 5 N/C Top View Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMSOP-77 ABSOLUTE MAXIMUM RATINGS (Note1) Supply Voltage Differential Input Voltage Input Voltage Output Short Circuit Duration Operating Temperature Range ±22V ±30V ±22V Indefinite 0°C to70°C Storage temperature Junction Temperature Soldering information (25 sec) Thermal Resistance 8 L SOIC 8 L PDIP -65°C to +125°C +150°C 265°C 158°C/W 103°C/W ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN =±15V and TA = +25°C unless otherwise specified. Parameter Conditions AMSOP-77E AMSOP-77F Min Typ Max Min Typ Max Input Offset Voltage Long Term VOS Stability 10 (Note 2) 20 0.3 Input Offset Current Input Bias Current 25 -0.2 AMSOP-77G Min Typ Max 60 50 0.4 0.3 1.5 1.2 2.0 -0.2 100 2.8 1.2 2.8 -0.2 µV µV/Mo 0.4 0.3 Units 0.3 2.8 nA 1.2 2.8 nA Input Noise Voltage 0.1Hz to 10Hz 0.35 0.6 0.38 0.65 0.38 0.65 µVP-P Input Noise Voltage Density fO = 10Hz fO = 100Hz (Note 3) fO = 1000Hz 10.3 10.0 9.6 18.0 13.0 11.0 10.5 10.2 9.8 20.0 13.5 11.5 10.5 10.3 9.8 20.0 13.5 11.5 nV/√Hz Input Noise Current 0.1Hz to 10Hz 14 30 15 35 15 35 pAP-P Input Noise Current Density fO = 10Hz fO = 100Hz (Note 3) fO = 1000Hz 0.32 0.14 0.12 0.80 0.23 0.17 0.35 0.15 0.13 0.90 0.27 0.18 0.35 0.15 0.13 0.90 0.27 0.18 pA/√Hz Input Resistance Differential-Mode (Note 4) 26 Input Resistance Common-Mode 45 18.5 200 ± 13 Input Voltage Range 45 18.5 200 ± 14 ± 13 ± 14 ± 13 45 MΩ 200 GΩ ± 14 V Common-Mode Rejection Ratio VCM = ± 13 0.1 1.0 0.1 1.6 0.1 1.6 µV/V Power Supply Rejection Ratio VS = ± 13 to ± 18 0.7 3.0 0.7 3.0 0.7 3.0 µV/V Large-Signal Voltage Gain RL≥2kΩ, VO =± 10V 5000 12000 2000 6000 2000 6000 V/mV Output Voltage Swing RL ≥10kΩ RL ≥2kΩ RL ≥1kΩ ± 13.5 ± 12.5 ± 12.0 ± 14.0 ± 13.0 ± 12.5 ± 13.5 ± 12.5 ± 12.0 ± 14.0 ± 13.0 ± 12.5 ± 13.5 ± 12.5 ± 12.0 ± 14.0 ± 13.0 ± 12.5 V Slew Rate RL ≥2kΩ (Note 3) 0.1 0.3 0.1 0.3 0.1 0.3 V/µs Closed-Loop Bandwidth AVCL =+1 (Note 3) 0.4 0.6 0.4 0.6 0.4 0.6 MHz Open-Loop Output Resistance VO = 0, IO= 0 60 60 Ω Power Consumption VS =± 15V, No Load VS =± 3V, No Load 50 3.5 Offset Adjustment Range RP =20kΩ ±3 Advanced Monolithic Systems, Inc. 60 60 4.5 www.advanced-monolithic.com 50 3.5 60 4.5 ±3 Phone (925) 443-0722 50 3.5 60 4.5 ±3 Fax (925) 443-0723 mW mV AMSOP-77 ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN= ±15, 0°C ≤ TA ≤ +70°C unless otherwise specified. Parameter Conditions AMSOP-77E AMSOP-77F Min Typ Max Min Typ Max Input Offset Voltage Average Input Offset Voltage Drift (Note 3) Input Offset Current Average Input Offset Current Drift (Note 5) Input Bias Current -0.2 Average Input Bias Current Drift ± 13.0 Units 10 55 20 100 80 150 µV 0.3 0.6 0.4 1.0 0.7 1.2 µV/°C 0.5 2.2 0.5 4.5 0.5 4.5 nA 1.5 40 1.5 85 1.5 85 pA/°C 2.4 4.0 2.4 6.0 2.4 6.0 nA 8 40 15 60 15 60 pA/°C (Note 5) Input Voltage Range AMSOP-77G Min Typ Max ± 13.5 -0.2 ± 13.0 ± 13.5 -0.2 ± 13.0 ± 13.5 V Common-Mode Rejection Ratio VCM = ± 13 0.1 1.0 0.1 3.0 0.1 3.0 µV/V Power Supply Rejection Ratio VS = ± 13 to ± 18 1.0 3.0 1.0 5.0 1.0 5.0 µV/V Large-Signal Voltage Gain RL≥2kΩ, VO =± 10V 2000 6000 1000 4000 1000 4000 V/mV Output Voltage Swing RL ≥2kΩ ± 12.0 ± 13.0 ± 12.0 ± 13.0 ± 12.0 ± 13.0 V Power Consumption VS = ± 15V, No Load 60 75 60 75 60 75 mW Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Note 2: Long-Term Input Offset Voltage Stability refers to the averaged trend line of VOS vs. Time over extended periods after the first 30 days of operation. Excluding the initial hour of operation, changes in VOS during the first 30 operating days are typically 2.5µV. Parameter is sample tested. Note 3: Sample tested Note 4: Guaranteed by design. Note 5: Guaranteed by end-point limits. TYPICAL PERFORMANCE CHARACTERISTICS 4 VS = ±15V 20 15 10 5 -40 0 40 TEMPERATURE (° C) 85 Advanced Monolithic Systems, Inc. 3 30 TA = 25° C VS = ±15V 2 1 0 -1 -2 -3 -4 0 0.5 1 1.5 2 2.5 3 3.5 TIME AFTER POWER SUPPLY TURN-ON (minutes) www.advanced-monolithic.com NONINVERTING INPUT BIAS CURRENT (mA) ABSOLUTE CHANGE IN INPUT OFFSET VOLTAGE ( µV) OPEN-LOOP GAIN (V/µV) 25 0 Input Bias Current vs Differrential Input Voltage Warm-UpDrift AT | VDIFF | ≤ 1.0V, | IB | ≤ 7nA (OP-07C) -30 20 -20 10 -10 0 0 -10 -20 10 VS = ±15V TA = 25° C 20 -30 30 -30 -20 -10 0 10 20 30 DIFFERENTIAL INPUT VALUE (V) Phone (925) 443-0722 Fax (925) 443-0723 INVERTING INPUT BIAS CURRENT (mA) Open-Loop Gain vs Temperature AMSOP-77 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Input Bias Current vs Temperature 2.0 3 2 1 0 -50 0 50 TEMPERATURE (° C) 16 VS = ±15V OPEN-LOOP GAIN (V/µV) INPUT OFFSET CURRENT ( nA) INPUT BIAS CURRENT ( nA) VS = ±15V 1.5 1.0 0.5 0 100 Open-Loop Frequency Response 32 PEAK-TO-PEAK AMPLITUEDE (V) OPEN-LOOP GAIN (dB) 120 VS = ±15V TA = 25° C 80 40 0 0 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) -50 4 0 28 24 20 16 12 8 4 0 1k 0 ±10 ±15 ±20 ±5 POWER SUPPLY VOLTAGE (V) Maximum Output Voltage vs Load Resistance VS = ±15V TA = 25° C 1M 10k 100k FREQUENCY (Hz) 20 VS = ±15V TA = 25° C VIN = ±10mV 15 POSITIVE SWING NEGATIVE SWING 10 5 0 100 1k 10k LOAD RESISTANCE TO GROUND ( Ω) Untrimmed Offset Voltage vs Temperature 85 VS = ±15V TA = 25° C 35 30 +ISC - ISC 20 ABSOLUTE VALUE OF OFFSET VOLTAGE (µV) OUTPUT SHORT-CIRCUIT CURRENT (mA) 8 Maximum Output Swing vs Frequency 40 15 0 1 2 3 4 TIME FROM OUTPUT BEING SHORTED (minutes) Advanced Monolithic Systems, Inc. 12 0 50 100 TEMPERATURE (° C) Output Short-Circuit Current vs Time 25 TA = 25° C RL = 2kΩ MAXIMUM OUTPUT VOLTAGE (V) 4 -40 Open-Loop Gain vs Power Supply Voltage Input Offset Current vs Temperature www.advanced-monolithic.com 75 VS = ±15V RS = 100Ω OP-77G OP-77F 50 25 OP-77E 0 -50 0 50 TEMPERATURE (° C) Phone (925) 443-0722 100 Fax (925) 443-0723 AMSOP-77 TYPICAL APPLICATIONS Precision High-Gain Differential Amplifier R2 1MΩ +15V 0.1µF R1 2 1kΩ R3 3 The high gain, gain linearity, CMRR, low TCVOS of the OP-77 make it possible to obtain performance not previously available in single stage very high-gain amplifier applications. 7 OP-77E + 4 1kΩ 6 0.1µF R1 R3 must equal . In this example, with a R2 R4 10mV differential signal, the maximum errors are as listed. For the best CMR, R4 1MΩ -15V TYPE AMOUNT COMMON-MODE VOLTAGE 0.01%/V GAIN LINEARITY, WORST CASE 0.02% TCVOS 0.008%/°C TCIOS 0.008%/°C Bilateral Current Source Basic Current Source 100mA current Source R3 R3 +15V 1kΩ R1 VIN 100kΩ R2 2 R1 - OP-77 3 + 6 VIN R2 R5 10Ω 100kΩ R4 990Ω 2 2N2222 - OP-77 3 + 6 50Ω 2N2907 R5 IOUT ≤ 15mA R4 -15V IOUT = VIN IOUT ≤ 100mA R3 R1 * R5 GIVEN R3= R4+R5, R1=R2 These current sources will supply both positive and negative current into a grounded load. ⎛ R4 ⎞ + 1⎟ R5 ⎜ R2 ⎝ ⎠ and that for Z to be indefinite, R5 + R4 must = R3 . Note that ZO = O R5 + R4 R3 R2 R1 − R2 R1 Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMSOP-77 TYPICAL APPLICATIONS (Continued) Precision Current Sinks Positive Current Sink Positive current Source V+ R1 RL + VIN + OP-77 - 200Ω 200Ω OP-77 IO VIN VIN IO = R1 VIN ≥ 0V FULL SCALE OF 1V, IO = 1A/V IRF520 IRF520 - IO VIN R1 VIN ≤ 0V IO = RL V- R1 1Ω These simple high current sinks require that the load float between the power supply and the sink. In these circuits, OP-77’s high gain, high CMRR, and low TCVOS assure high accuracy. Precision Absolute Value Amplifier 1kΩ 1kΩ +15V 0.1µF +15V C1 30pF 0.1µF D1 1N4148 2 2 - D2 7 OP-77E 3 + 4 6 3 7 OP-77E + 4 2N4393 0.1µF 6 VOUT 0< VOUT<10V 0.1µF R3 2kΩ -15V -15V The high gain and low TCVOS assure accurate operation with inputs from microvolts to volts. In this circuit, this signal always appears as a common-mode signal to the op amps. The OP-77E CMRR of 1µV/V assures errors of less than 2ppm. Low Noise Precision Reference +15V + 10µF 2 2 2 REF-01 6 VO REF-01 6 VO REF-01 6 VO 4 4 4 100kΩ OP-77 + VOUT 100kΩ 100kΩ 0.1µF This circuit relies upon OP-77’s low TCVOS and noise combined with very high CMRR, to provide precision buffering of the averaged REF-01 voltage outputs. Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMSOP-77 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 8 LEAD SOIC PLASTIC PACKAGE (S) 0.189-0.197* (4.801-5.004) 8 7 6 5 0.228-0.244 (5.791-6.197) 0.150-0.157** (3.810-3.988) 1 2 3 4 0.010-0.020 x 45° (0.254-0.508) 0.053-0.069 (1.346-1.752) 0.004-0.010 (0.101-0.254) 0.014-0.019 (0.355-0.483) 0.008-0.010 (0.203-0.254) 0.050 (1.270) TYP 0°-8° TYP 0.016-0.050 (0.406-1.270) S (SO-8 ) AMS DRW# 042293 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 8 LEAD PLASTIC DIP PACKAGE (P) 0.400* (10.160) MAX 8 7 6 5 1 2 3 4 0.255±0.015* (6.477±0.381) 0.045-0.065 (1.143-1.651) 0.300-0.325 (7.620-8.255) 0.130±0.005 (3.302±0.127) 0.065 (1.651) TYP 0.005 (0.127) MIN 0.100±0.010 (2.540±0.254) 0.125 (3.175) MIN 0.009-0.015 (0.229-0.381) 0.015 (0.380) MIN 0.018±0.003 (0.457±0.076) 0.325 +0.025 -0.015 (8.255 +0.635 ) -0.381 P (8L PDIP ) AMS DRW# 042294 *DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS. MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.010" (0.254mm) Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723