OP1177AR-REEL7 vs OP1177ARZ vs OP1177ARMZ Comparison

**GENERAL DESCRIPTION** The OPx177 family consists of very high precision, single, dual, and quad amplifiers featuring extremely low offset voltage and drift, low input bias current, low noise, and low power consumption. Outputs are stable with capacitive loads of over 1000 pF with no external compensation. Supply current is less than 500 μA per amplifier at 30 V. Internal 500 Ω series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal.

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*FEATURES**

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*Low offset voltage: 60 μV maximum**

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*Very low offset voltage drift: 0.7 μV/°C maximum**

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*Low input bias current: 2 nA maximum**

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*Low noise: 8 nV/√Hz typical**

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*CMRR, PSRR, and A****VO ****> 120 dB minimum**

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*Low supply current: 400 μA per amplifier**

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*Dual supply operation: ±2.5 V to ±15 V**

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*Unity-gain stable**

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*No phase reversal**

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*Inputs internally protected beyond supply voltage**

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*APPLICATIONS**

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*Wireless base station control circuits**

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*Optical network control circuits**

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*Instrumentation**

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*Sensors and controls**

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*Thermocouples**

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*Resistor thermal detectors (RTDs)**

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*Strain bridges**

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*Shunt current measurements**

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*Precision filters**

The OP1177ARZ is a low input bias current Operational Amplifier featuring extremely low offset voltage and drift, low noise and low power consumption. Outputs are stable with capacitive loads of over 1000pF with no external compensation. Supply current is less than 500µA per amplifier at 30V. Internal 500R series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal. It offers the widest specified temperature range of any high precision amplifier in surface-mount packaging. All versions are fully specified for operation from -40°C to +125°C for the most demanding operating environments.

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60µV Maximum low offset voltage

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0.7µV/°C Maximum very low offset voltage drift

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2nA Maximum low input bias current

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8nV/√Hz Typical low noise

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400µA Low supply current

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Unity gain stable

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No phase reversal

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Inputs internally protected beyond supply voltage

The OP1177ARMZ is a very high precision single Operational Amplifier features extremely low offset voltage and drift, low input bias current, low noise and low power consumption. Outputs are stable with capacitive loads of over 1000pF with no external compensation. Supply current is less than 500µA per amplifier at 30V. Internal 500R series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal. Applications for this amplifier include precision diode power measurement, voltage and current level setting and level detection in optical and wireless transmission systems. Additional applications include line-powered and portable instrumentation and controls-thermocouple, RTD, strain-bridge and other sensor signal conditioning and precision filters.

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Unity-gain stable

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No phase reversal

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Inputs internally protected beyond supply voltage

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60µV Maximum low offset voltage

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0.7µV/°C Maximum very low offset voltage drift

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8nV/√Hz Typical low noise

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>120dB Minimum CMRR, PSRR and AVO

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400µA/amplifier Low supply current