General Description

The MAX4321 operational amplifier (op amp) combines a 5MHz gain-bandwidth product and excellent DC accuracy with Rail-to-Rail® operation at both the inputs and the output. This device requires only 650µA and operates from either a single +2.4V to +6.5V supply or dual ±1.2V to ±3.25V supplies, although the MAX4321 typically operates down to +1.8V (±0.9V). The MAX4321 remains unity-gain stable with capacitive loads up to 500pF and is capable of driving 250Ω loads to within 200mV of either rail.

With rail-to-rail input common-mode range and output swing, the MAX4321 is ideal for low-voltage, single-supply applications. In addition, low ±1.2mV input offset voltage and high 2V/µs slew rate make this device ideal for signal-conditioning stages for precision, low-voltage data acquisition systems. The MAX4321 comes in a space saving 5-pin SOT23 package and is guaranteed over the extended (-40°C to +85°C) temperature range.

Features

♦ Low-Voltage, Pin-for-Pin Upgrade for LMC7101

♦ Guaranteed +2.4V to +6.5V Single-Supply Operation

♦ Typically Operates Down to +1.8V

♦ 5MHz Gain-Bandwidth Product

♦ 650µA Quiescent Current

♦ Rail-to-Rail Common-Mode Input Voltage Range

♦ Rail-to-Rail Output Voltage Range

♦ Drives 250Ω Loads

♦ Unity-Gain Stable for Capacitive Loads up to 500pF

♦ No Phase Reversal for Overdriven Inputs

♦ Low-Cost Solution in SOT23-5 Package

Applications

  Battery-Powered Instruments

  Portable Equipment

  Data-Acquisition Systems

  Sensor and Signal Conditioning

  Low-Power, Low-Voltage Applications

  General-Purpose Low-Voltage Applications