CMOS Operational Amplifier AT8551

Part Number Unit Price Datasheet
Click to View


Low Offset Voltage: 1μV

Input Offset Drift: 5μV/°C

High Gain Bandwidth Product: 4.5MHz

Rail-to-Rail Input and Output

High Gain, CMRR, PSRR: 130dB

High Slew Rate: 2.7V/μs

Low Noise: 0.75μVP-P (0.01~10Hz)

Low Power Consumption: 640μA /op amp

Overload Recovery Time: 1μs

Low Supply Voltage: +2.7 V to +5.5 V

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.


The AT8551/AT8552 (dual version & shutdown) series of CMOS operational amplifiers use auto-zero techniques to simultaneously provide very low offset voltage (5μV max) and near-zero drift over time and temperature. This family of amplifiers has very low maximum offset voltage, <5µV (competition AD8551: 10µV); low noise, <0.75µVP-P @0.01Hz to 10Hz (competition AD8551: 1µVP-P @0Hz to 10Hz); high slew rate, 2.7V/µs (competition AD8551: 0.4µV/µs); high speed, 4.5MHz (competition AD8551: 1.5MHz); and, the best of all, low cost, $1.00 @1000pcs (competition AD8551: $1.25 @1000pcs).