This document describes the features and characteristics of the AD823, a dual channel, 16 MHz, rail-to-rail FET input amplifier. The amplifier operates on a single supply, has rail-to-rail output swing, an input voltage range that extends below ground, and is compatible with single supplies from 3 V to 36 V. It also has high load drive capability, excellent AC performance, good DC performance, low distortion, and low noise.
The AD823 is a dual precision op‑amp with JFET inputs, designed for battery‑powered instrumentation, photodiode preamps, active filters and high‑speed data‑acquisition systems. It provides rail‑to‑rail output swing, low offset voltage (800 µV max) and low drift (2 µV/°C), making it suitable for precision analog front‑ends.
Key performance figures include a 16 MHz –3 dB bandwidth, 22 V/µs slew rate, 15 mA output current and the ability to drive up to 500 pF capacitive loads. The device is offered in 8‑lead PDIP and SOIC packages and operates over an industrial temperature range of –40 °C to +85 °C.
| –3 dB Bandwidth | 16 MHz (typ) |
|---|---|
| Slew Rate | 22 V/µs (typ) |
| Input Offset Voltage | 0.8 mV max |
| Input Bias Current | 25 pA max |
| Output Current | 15 mA (typ) |
| Capacitive Load Drive | 500 pF |
| Operating Supply Range | 3 V to 36 V |
The AD823 can operate from a single supply of 3 V to 36 V or from dual supplies of ±1.5 V to ±18 V.
It can drive up to 500 pF of direct capacitive load.
The typical –3 dB bandwidth is 16 MHz.
The AD823 can source up to 15 mA of output current.