AD822 is a single-supply, rail-to-rail low power FET-input operational amplifier. It features true single-supply operation, output swings rail-to-rail, input voltage range extends below ground, single-supply capability from 3V to 36V, and dual-supply capability from ±1.5V to ±18V. It is suitable for battery-powered precision instrumentation, photodiode preamps, active filters, 12-bit to 14-bit data acquisition systems, medical instrumentation, and low power applications.
The AD822 is a dual precision, low‑power FET‑input operational amplifier that can operate from a single supply of 3 V to 36 V or dual supplies of 1.5 V to 18 V. It provides true single‑supply capability with an input voltage range that extends below the negative rail, allowing signals below ground in single‑supply mode. Output voltage swing reaches within 10 mV of each rail, delivering up to 15 mA of output current and driving capacitive loads of 350 pF.
Key specifications include a unity‑gain bandwidth of 1.8 MHz, a slew rate of 3 V/µs, a quiescent current of 800 pA per amplifier, and an input offset voltage of 800 µV maximum. The device is offered in A and B grades, rated for an industrial temperature range of –40 °C to +85 °C, and is available in 8‑lead PDIP, MSOP, and SOIC packages. Typical applications are battery‑powered precision instrumentation, photodiode preamps, active filters, and data‑acquisition systems.
| Supply Voltage (single) | 3 V to 36 V |
|---|---|
| Supply Voltage (dual) | 1.5 V to 18 V |
| Output Swing | Within 10 mV of each rail |
| Maximum Output Current | 15 mA |
| Capacitive Load Drive | 350 pF |
| Quiescent Current | 800 pA per amplifier |
| Input Offset Voltage | 800 µV max |
The AD822 can source up to 15 mA of output current.
The device draws a maximum quiescent current of 800 pA per amplifier.