General Description

The dual MAX492, quad MAX494, and single MAX495 operational amplifiers combine excellent DC accuracy with rail-to-rail operation at the input and output. Since the common-mode voltage extends from VCC to VEE, the devices can operate from either a single supply (+2.7V to +6V) or split supplies (±1.35V to ±3V). Each op amp requires less than 150µA supply current. Even with this low current, the op amps are capable of driving a 1kΩ load, and the input referred  voltage noise is only 25nV/√Hz. In addition, these op amps can drive loads in excess of 1nF.

Features

♦ Low-Voltage Single-Supply Operation (+2.7V to +6V)

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

♦ Rail-to-Rail Output Swing

♦ 500kHz Gain-Bandwidth Product

♦ Unity-Gain Stable

♦ 150µA Max Quiescent Current per Op Amp

♦ No Phase Reversal for Overdriven Inputs

♦ 200µV Offset Voltage

♦ High Voltage Gain (108dB)

♦ High CMRR (90dB) and PSRR (110dB)

♦ Drives 1kΩ Load

♦ Drives Large Capacitive Loads

♦ MAX495 Available in µMAX Package—8-Pin SO

Applications

Portable Equipment

Battery-Powered Instruments

Data Acquisition

Signal Conditioning

Low-Voltage Applications