This document describes the features and characteristics of the AD8551/AD8552/AD8554 series of ultra-low drift, single-supply, rail-to-rail input/output operational amplifiers. These features include low offset voltage, drift, input/output swing, single-supply operation, high gain, CMRR, PSRR, ultra-low input bias current, and low supply current. They are suitable for applications such as temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.
The AD855x family provides ultralow offset voltage (1 µV), drift (0.005 pV/°C), bias current (10‑50 pA) and rail‑to‑rail input/output swing. All devices operate from a single 2.7 V to 5 V supply and are specified for –40 °C to +125 °C industrial/automotive temperature range.
The family includes single (AD8551), dual (AD8552) and quad (AD8554) packages in MSOP, SOIC and TSSOP formats. Detailed electrical characteristics, typical performance graphs, pin configurations and ordering information are provided in the handbook.
| Offset Voltage | 1 µV typ |
|---|---|
| Input Bias Current | 10‑50 pA |
| Supply Current per Amplifier | 850‑975 µA |
| Supply Voltage Range | 2.7 V to 5 V single‑supply |
| Operating Temperature Range | -40 °C to +125 °C |
They operate from 2.7 V to 5 V with a single supply.
The offset voltage drift is 0.005 pV/°C.
They are rated for –40 °C to +125 °C operation.