This document describes the features and characteristics of the Precision, Dual-Channel Instrumentation Amplifier AD8222. The product features two channels in a small 4 mm × 4 mm LFCSP package, gain set with 1 resistor per amplifier (G = 1 to 10,000), low noise, high accuracy dc performance, excellent ac performance, adjustable common-mode output, and is suitable for applications such as multichannel data acquisition, medical instrumentation, and industrial process control.
The AD8222 is a high‑performance, dual‑channel instrumentation amplifier that requires only one external resistor per channel to set gains from 1 to 10 000. It is offered in a compact 4 mm × 4 mm LFCSP package, allowing twice the channel density of a typical single‑channel part while maintaining low noise and high accuracy.
Key features include a gain range of 1‑10 000, low input‑referred noise (8 nV/√Hz at 1 kHz), high CMRR (up to 126 dB at G=100), rail‑to‑rail output, and operation from a single‑ or dual‑supply voltage of +2.3 V to +18 V. The device is RoHS compliant and specified for an industrial temperature range of –40 °C to +85 °C.
| Gain Range | 1 – 10,000 |
|---|---|
| Supply Voltage Range | +2.3 V to +18 V |
| Voltage Noise (1 kHz) | 8 nV/√Hz |
The AD8222 provides a gain range from 1 to 10 000.
It operates from +2.3 V up to +18 V.
The input voltage noise is 8 nV/√Hz at 1 kHz.