Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op Amps

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.

The precision performance of the MAX492/MAX494/MAX495, combined with their wide input and output dynamic range, low-voltage single-supply operation, and very low supply current, makes them an ideal choice for battery-operated equipment and other low-voltage applications. The MAX492/MAX494/MAX495 are available in DIP and SO packages in the industry-standard op-amp pin configurations. The MAX495 is also available in the smallest 8-pin SO: the µMAX® package.

Applications

* Battery-Powered Applications * Data Acquisition * Low-Voltage Applications * Portable Equipment * Signal Conditioning

* 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

* Dual, precision, rail-to-rail input and output (MAX492)

* Quad, precision, rail-to-rail input and output (MAX494)

* Single, precision, rail-to-rail input and output (MAX495)