General Description
The MAX4400–MAX4403 low-cost, general-purpose op amps offer rail-to-rail outputs, draw only 320µA of quiescent current, and operate from a single +2.5V to +5.5V supply. For additional power conservation, the MAX4401 offers a low-power shutdown mode that reduces supply current to 1µA (max) and puts the amplifier’s output in a high-impedance state. These devices deliver ±1.4mA of output current and are unity-gain stable with a 1MHz gainbandwidth product driving capacitive loads up to 400pF. The MAX4400–MAX4403 are specified to +125°C, making them suitable for use in a variety of harsh environments, such as automotive applications.

Features
♦ Single +2.5V to +5.5V Supply Voltage Range
♦ 320µA Quiescent Current per Amplifier
♦ 1µA (max) Shutdown Mode (MAX4401)
♦ Available in Space-Saving Packages
    5-Pin SC70 (MAX4400)
    6-Pin SC70 (MAX4401)
    8-Pin SOT23/µMAX (MAX4402)
♦ 110dB AVOL with 2kΩ Load
♦ 0.015% THD with 2kΩ Load
♦ Rail-to-Rail Output Voltage Swing
♦ 1.4mA of Sink and Source Load Current
♦ Unity-Gain Stable up to CLOAD = 400pF
♦ Ground-Sensing Inputs

Applications
    Single-Supply, Zero-Crossing Detectors
    Instruments and Terminals
    Portable Communications
    Electronic Ignition Modules
    Infrared Receivers
    Sensor Signal Detection