GENERAL DESCRIPTION

The AD8638/AD8639 are single and dual wide bandwidth, auto-zero amplifiers featuring rail-to-rail output swing and low noise. These amplifiers have very low offset, drift, and bias current. Operation is fully specified from 5 V to 16 V single supply (±2.5 V to ±8 V dual supply).

FEATURES

Low offset voltage: 9 μV maximum

Offset drift: 0.04 μV/°C maximum

Rail-to-rail output swing

5 V to 16 V single-supply or ±2.5 V to ±8 V dual-supply

operation

High gain: 136 dB typical

High CMRR: 133 dB typical

High PSRR: 143 dB typical

Very low input bias current: 40 pA maximum

Low supply current: 1.3 mA maximum