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