CMOS Operational Amplifier AT8557

Part Number Unit Price Datasheet
AT8557 $0.99 DATASHEET
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Upgraded Drop-in Replacement for AD8557

Low Offset Voltage: 20μV (typ) 50μV (max)

Input Offset Drift: 0.03μV/°C (max)

High Gain Bandwidth Product: 4.3MHz

Rail-to-Rail Input and Output

High Gain, CMRR & PSRR: ≥120dB

High Slew Rate: 2.5V/μs

Low Noise: 0.93μVP-P (0.01~10Hz)

Low Power Consumption: 650μA/op amp

Overload Recovery Time: 1μs

Low Supply Voltage: +2.7V to +5.5V

No External Capacitors Required

Extended Temperature: −40°C to +125°C


Temperature Sensors, Medical/Industrial Instrumentation, Pressure Sensors, Battery-Powered Instrumentation, Active Filtering, Weight Scale Sensor, Strain Gage Amplifiers, Power Converter/Inverter, etc.


This AT8557 general-purpose CMOS operational amplifiers that provides ultralow noise, offset and power. The AT8557 use auto-zero techniques to simultaneously provide very low offset voltage (50μV max) and near-zero drift over time and temperature.