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.

FEATURES
    Low offset voltage: 60 μV maximum
    Very low offset voltage drift: 0.7 μV/°C maximum
    Low input bias current: 2 nA maximum
    Low noise: 8 nV/√Hz typical
    CMRR, PSRR, and AVO > 120 dB minimum
    Low supply current: 400 μA per amplifier
    Dual supply operation: ±2.5 V to ±15 V
    Unity-gain stable
    No phase reversal
    Inputs internally protected beyond supply voltage

APPLICATIONS
    Wireless base station control circuits
    Optical network control circuits
    Instrumentation
    Sensors and controls
        Thermocouples
        Resistor thermal detectors (RTDs)
        Strain bridges
        Shunt current measurements
    Precision filters