GENERAL DESCRIPTION
The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/ ADA4692-4 are the quad rail-to-rail output, single-supply amplifiers featuring low power, wide bandwidth, and low noise. The ADA4691-2 has two independent shutdown pins, allowing further reduction in supply current. The ADA4691-4 is a quad with dual shutdown pins each controlling a pair of amplifiers and is available in the 16-lead LFCSP. The ADA4692-4 is a quad version without shutdown.

FEATURES
    Low power: 180 μA typical
    Very low input bias currents: 0.5 pA typical
    Low noise: 16 nV/√Hz typical
    3.6 MHz bandwidth
    Offset voltage: 500 μV typical
    Low offset voltage drift: 4 μV/°C maximum
    Low distortion: 0.003% THD + N
    2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply
    Available in very small 2 mm × 2 mm LFCSP packages

APPLICATIONS
    Photodiode amplifiers
    Sensor amplifiers
    Portable medical and instrumentation
    Portable audio: MP3s, PDAs, and smartphones
    Communications
    Low-side current sense
    ADC drivers
    Active filters
    Sample-and-hold