General Description

The MAX4162/MAX4163/MAX4164 are single/dual/quad, micropower operational amplifiers that combine an exceptional bandwidth to power consumption ratio with true rail-to-rail inputs and outputs. They consume a mere 25µA quiescent current per amplifier, yet achieve 200kHz gain-bandwidth product and are unity-gain stable while driving any capacitive load. The MAX4162/MAX4163/MAX4164 operate from either a single supply (2.5V to 10V) or dual supplies (±1.25V to ±5V), with an input common-mode voltage range that extends 250mV beyond either supply rail. These amplifiers use a proprietary architecture to achieve a very high input common-mode rejection ratio without the midswing nonlinearities present in other rail-to-rail op amps. This architecture also maintains high open-loop gain and output swing while driving substantial loads.

Features

♦ UCSP Package (MAX4163)

♦ 1.0pA Typical Input Bias Current

♦ Single-Supply Operation from 2.5V to 10V

♦ Input Common-Mode Voltage Range Extends 250mV Beyond Either Supply Rail

♦ Rail-to-Rail Output Swing

♦ 200kHz Gain-Bandwidth Product

♦ 25µA Quiescent Current per Amplifier

♦ Excellent CMRR, PSRR, and Gain Linearity

♦ No Phase Reversal for Overdriven Inputs

♦ Unity-Gain Stable

♦ Stable with Any Capacitive Load

♦ Internally Short-Circuit Protected to Either Rail

Applications

Battery-Powered Devices

Medical Instruments

pH Probes

Ionization Detectors

Portable Equipment

Cellular Phones

Low-Power, Low-Voltage Equipment