AMSOP-77FS

Advanced Monolithic Systems FEATURES AMSOP-77 ULTRA LOW OFFSET VOLTAGE OPERATIONAL AMPLIFIER RoHS compliant APPLICATIONS • High-Gain Instrumentation • Precision Data Acquisition • Precision Integrators • Precision Threshold Detectors • Biomedical Amplifiers • 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 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 PDIP AMSOP-77EP AMSOP-77FP AMSOP-77GP 8 LEAD SOIC ±25µV AMSOP-77ES ±60µV AMSOP-77FS ±100µV AMSOP-77GS OPERATING TEMPERATURE RANGE 0 to 70° C 0 to 70° C 0 to 70° C PIN CONNECTIONS 8 Lead SOIC/ 8Lead PDIP VOS TRIM -IN +IN 1 2 3 8 VOS TRIM 7 V+ 6 OUT 5 N/C V- 4 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 Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Input Noise Current Density Input Resistance Differential-Mode Input Resistance Common-Mode Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing VCM = ± 13 VS = ± 13 to ± 18 RL≥2kΩ, VO =± 10V RL ≥10kΩ RL ≥2kΩ RL ≥1kΩ RL ≥2kΩ (Note 3) AVCL =+1 (Note 3) VO = 0, IO= 0 VS =± 15V, No Load VS =± 3V, No Load RP =20kΩ 5000 ± 13.5 ± 12.5 ± 12.0 0.1 0.4 ± 13 0.1Hz to 10Hz fO = 10Hz fO = 100Hz (Note 3) fO = 1000Hz 0.1Hz to 10Hz fO = 10Hz fO = 100Hz (Note 3) fO = 1000Hz (Note 4) 26 -0.2 (Note 2) 10 0.3 0.3 1.2 0.35 10.3 10.0 9.6 14 0.32 0.14 0.12 45 200 ± 14 0.1 0.7 12000 ± 14.0 ± 13.0 ± 12.5 0.3 0.6 60 50 3.5 ±3 60 4.5 1.0 3.0 2000 ± 13.5 ± 12.5 ± 12.0 0.1 0.4 ± 13 1.5 2.0 0.6 18.0 13.0 11.0 30 0.80 0.23 0.17 18.5 -0.2 25 20 0.4 0.3 1.2 0.38 10.5 10.2 9.8 15 0.35 0.15 0.13 45 200 ± 14 0.1 0.7 6000 ± 14.0 ± 13.0 ± 12.5 0.3 0.6 60 50 3.5 ±3 60 4.5 1.6 3.0 2000 ± 13.5 ± 12.5 ± 12.0 0.1 0.4 ± 13 2.8 2.8 0.65 20.0 13.5 11.5 35 0.90 0.27 0.18 18.5 -0.2 60 AMSOP-77G Min Typ Max 50 0.4 0.3 1.2 0.38 10.5 10.3 9.8 15 0.35 0.15 0.13 45 200 ± 14 0.1 0.7 6000 ± 14.0 ± 13.0 ± 12.5 0.3 0.6 60 50 3.5 ±3 60 4.5 1.6 3.0 2.8 2.8 0.65 20.0 13.5 11.5 35 0.90 0.27 0.18 100 Units µV µV/Mo nA nA µVP-P nV/√Hz pAP-P pA/√Hz MΩ GΩ V µV/V µV/V V/mV V V/µs MHz Ω Slew Rate Closed-Loop Bandwidth Open-Loop Output Resistance Power Consumption Offset Adjustment Range mW mV Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 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 Input Offset Current Average Input Offset Current Drift Input Bias Current Average Input Bias Current Drift Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing Power Consumption VCM = ± 13 VS = ± 13 to ± 18 RL≥2kΩ, VO =± 10V RL ≥2kΩ VS = ± 15V, No Load 2000 ± 12.0 (Note 5) ± 13.0 (Note 5) -0.2 (Note 3) 10 0.3 0.5 1.5 2.4 8 ± 13.5 0.1 1.0 6000 ± 13.0 60 75 1.0 3.0 1000 ± 12.0 55 0.6 2.2 40 4.0 40 ± 13.0 -0.2 20 0.4 0.5 1.5 2.4 15 ± 13.5 0.1 1.0 4000 ± 13.0 60 75 3.0 5.0 1000 ± 12.0 100 1.0 4.5 85 6.0 60 ± 13.0 -0.2 AMSOP-77G Min Typ Max 80 0.7 0.5 1.5 2.4 15 ± 13.5 0.1 1.0 4000 ± 13.0 60 75 3.0 5.0 150 1.2 4.5 85 6.0 60 Units µV µV/°C nA pA/°C nA pA/°C V µV/V µV/V V/mV V 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 Open-Loop Gain vs Temperature 25 ABSOLUTE CHANGE IN INPUT OFFSET VOLTAGE ( µ V) OPEN-LOOP GAIN (V/ µ V) VS = ±15V Warm-UpDrift 4 3 2 1 0 -1 -2 -3 -4 TA = 25° C VS = ±15V Input Bias Current vs Differrential Input Voltage 30 NONINVERTING INPUT BIAS CURRENT (mA) 20 10 0 -10 -20 VS = ±15V TA = 25° C AT | VDIFF | ≤ 1.0V, | IB | ≤ 7nA (OP-07C) -30 INVERTING INPUT BIAS CURRENT (mA) -20 -10 0 10 20 20 15 10 5 0 -40 0 40 TEMPERATURE (° C) 85 0 0.5 1 1.5 2 2.5 3 3.5 TIME AFTER POWER SUPPLY TURN-ON (minutes) -30 30 -30 -20 -10 0 10 20 30 DIFFERENTIAL INPUT VALUE (V) Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMSOP-77 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Input Bias Current vs Temperature 4 INPUT OFFSET CURRENT ( nA) VS = ±15V Input Offset Current vs Temperature 2.0 VS = ±15V Open-Loop Gain vs Power Supply Voltage 16 OPEN-LOOP GAIN (V/ µ V) TA = 25° C RL = 2kΩ INPUT BIAS CURRENT ( nA) 3 1.5 12 2 1.0 8 1 0.5 4 0 -50 0 50 TEMPERATURE (° C) 100 0 -50 0 50 100 TEMPERATURE (° C) 0 0 ±10 ±15 ±20 ±5 POWER SUPPLY VOLTAGE (V) Open-Loop Frequency Response 120 VS = ±15V TA = 25° C MAXIMUM OUTPUT VOLTAGE (V) 32 PEAK-TO-PEAK AMPLITUEDE (V) 28 24 20 16 12 8 4 0 Maximum Output Swing vs Frequency 20 VS = ±15V TA = 25° C Maximum Output Voltage vs Load Resistance VS = ±15V TA = 25° C VIN = ±10mV OPEN-LOOP GAIN (dB) 80 15 POSITIVE SWING NEGATIVE SWING 40 10 0 5 -40 0 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 1k 10k 100k FREQUENCY (Hz) 1M 0 100 1k 10k LOAD RESISTANCE TO GROUND ( Ω ) Output Short-Circuit Current vs Time 40 ABSOLUTE VALUE OF OFFSET VOLTAGE ( µ V) OUTPUT SHORT-CIRCUIT CURRENT (mA) VS = ±15V TA = 25° C Untrimmed Offset Voltage vs Temperature 85 75 VS = ±15V RS = 100Ω OP-77G 35 30 +ISC 50 OP-77F 25 20 15 - ISC 25 OP-77E 0 1 2 3 4 TIME FROM OUTPUT BEING SHORTED (minutes) 0 -50 0 50 TEMPERATURE (° C) 100 Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMSOP-77 TYPICAL APPLICATIONS Precision High-Gain Differential Amplifier R2 +15V 0.1µF R1 1kΩ R3 1kΩ R4 1MΩ -15V 1MΩ 2 3 OP-77E + 7 6 0.1µF 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. R1 R3 must equal . In this example, with a R2 R4 10mV differential signal, the maximum errors are as listed. For the best CMR, TYPE COMMON-MODE VOLTAGE GAIN LINEARITY, WORST CASE TCVOS TCIOS AMOUNT 0.01%/V 0.02% 0.008%/°C 0.008%/°C 4 Bilateral Current Source Basic Current Source R3 1kΩ R1 VIN 100kΩ R2 100kΩ 2 100mA current Source R3 +15V - R1 6 R5 10Ω R4 990Ω IOUT ≤ 15mA VIN R2 2 OP-77 3 + - OP-77 3 + 6 50Ω 2N2222 2N2907 R5 R4 -15V R3 R1 * R5 IOUT ≤ 100mA IOUT = VIN 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 V+ Positive current Source R1 RL IO VIN + OP-77 200Ω IRF520 + OP-77 VIN - 200Ω IRF520 IO RL VIN IO = R1 VIN ≥ 0V FULL SCALE OF 1V, IO = 1A/V VIN R1 VIN ≤ 0V IO = 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 +15V +15V 0.1µF C1 30pF D1 1N4148 2 2 7 6 2N4393 0.1µF R3 2kΩ -15V -15V D2 3 7 OP-77E + 4 6 0.1µF VOUT 0< VOUT