This document describes the features and characteristics of AD8571/AD8572/AD8574 amplifiers, including low offset voltage, low input offset drift, rail-to-rail input and output swing, single-supply operation, high gain, high common mode rejection ratio, high power supply rejection ratio, ultra-low input bias current, low supply current, 50 us overload recovery time and no external capacitors.
The AD857x family comprises single (AD8571), dual (AD8572) and quad (AD8574) operational amplifiers featuring zero‑drift architecture, rail‑to‑rail input and output swings, and operation from 2.7 V to 5 V single supply. They provide ultralow offset voltage, offset drift, and input bias current, making them suitable for precision sensor and instrumentation applications.
Typical applications include temperature, pressure and strain‑gage sensors, medical instrumentation, and thermocouple amplifiers. The devices are offered in 8‑lead MSOP, SOIC and TSSOP packages for the single and dual versions, and 14‑lead SOIC and TSSOP packages for the quad version.
| Offset Voltage | 1 pV |
|---|---|
| Input Bias Current | 10 pA typical |
| Supply Current per Amplifier | 750 pA |
| CMRR | 140 dB typical |
| PSRR | 130 dB typical |
| Gain Bandwidth Product | 15 MHz |
| Operating Temperature Range | -40°C to +125°C |
| Supply Voltage Range | 2.7 V to 5 V single‑supply |
| Package Options (AD8574) | 14‑lead narrow SOIC and TSSOP |
The offset voltage is specified as low as 1 pV.
They operate from 2.7 V to 5 V single‑supply.
Typical supply current is about 850 pA per amplifier.
The AD8574 is offered in 14‑lead narrow SOIC and TSSOP packages.