This document describes the features and characteristics of the Analog Devices AD823 dual, 16 MHz, rail-to-rail FET input amplifier. It features single supply operation, output swings rail to rail, input voltage range extends below ground, and single supply capability from +3V to +36V. Additionally, it has high load drive capacity, low distortion, and low noise. The product can be used in battery-powered precision instrumentation, photodiode preamps, active filters, 12- to 16-bit data acquisition systems, and medical instrumentation.
The AD823 dual precision op‑amp provides single‑supply operation from +3 V to +36 V (or ±1.5 V to ±18 V) with rail‑to‑rail output swing and the ability to drive capacitive loads up to 500 pF. It features low offset voltage (800 µV max), low bias current (25 pA), and a high slew rate, making it suitable for battery‑powered instrumentation, photodiode preamps, active filters, and data‑acquisition systems.
Key specifications include a -3 dB bandwidth of 16 MHz, a typical slew rate of 22 V/µs, output current capability of up to 15 mA, and quiescent current around 5 mA per amplifier. The device is offered in 8‑pin plastic DIP (N‑8) and 8‑lead SOIC (S0‑8) packages and operates over an industrial temperature range of –40 °C to +85 °C.
| -3 dB Bandwidth | 16 MHz |
|---|---|
| Slew Rate | 22 V/ps |
| Input Offset Voltage | 800 µV max |
| Input Bias Current | 25 pA |
| Supply Voltage Range | +3 V to +36 V |
| Quiescent Current | 5.2 mA typ |
| Output Current | 15 mA |
| Capacitive Load Drive | 500 pF |
The AD823 operates from a single supply of +3 V to +36 V (or dual supplies of ±1.5 V to ±18 V).
The device can source up to 15 mA (typical 16 mA) while maintaining a 0.5 V headroom from the supply rails.
The AD823 provides a -3 dB bandwidth of about 16 MHz at a gain of +1.
It is offered in an 8‑pin plastic DIP (N‑8) and an 8‑lead SOIC (S0‑8) package.