The OP490 is a low voltage, micropower, quad operational amplifier with features including single/dual-supply operation, input and output voltage ranges including ground, low supply current, high output drive, low offset voltage, and high open-loop gain.
The OP490 is a high‑performance micropower quad operational amplifier that can operate from a single supply of 1.6 V to 36 V or dual supplies of ±0.8 V to ±18 V. It features input and output ranges that include ground, a low quiescent current of less than 20 µA per amplifier, and each amplifier can deliver over 5 mA of output current.
Typical applications include battery‑powered instruments and remote sensors where low power consumption and wide supply range are critical. The datasheet provides detailed electrical characteristics, absolute maximum ratings, and example circuits such as a micropower voltage‑controlled oscillator.
| Supply Current (All Amplifiers) typical | 60 µA |
|---|---|
| Input Offset Voltage typical | 1.0 mV |
| Input Offset Current typical | 5 nA |
It operates from a single supply of 1.6 V to 36 V or from dual supplies of ±0.8 V to ±18 V.
Each amplifier draws less than 20 µA, giving a total typical supply current of about 60 µA for all four amplifiers.
Each amplifier can deliver a minimum of 5 mA output current to a load.
The device is rated for a maximum supply voltage of ±18 V.