GENERAL DESCRIPTION

The AD8691, AD8692, and AD8694 are low cost, single, dual, and quad rail-to-rail output, single-supply amplifiers featuring low offset and input voltages, low current noise, and wide signal bandwidth. The combination of low offset, low noise, very low input bias currents, and high speed make these amplifiers useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from this combination of performance features. Audio and other ac applications benefit from the wide bandwidth and low distortion of these devices.

FEATURES

Offset voltage: 400 µV typ

Low offset voltage drift: 6 µV/°C max (AD8692/AD8694)

Very low input bias currents: 1 pA max

Low noise: 8 nV/√Hz

Low distortion: 0.0006%

Wide bandwidth: 10 MHz

Unity-gain stable

Single-supply operation: 2.7 V to 6 V

APPLICATIONS

Photodiode amplification

Battery-powered instrumentation

Medical instruments

Multipole filters

Sensors

Portable audio devices