Application note for the AD820, AD822 and AD824 low‑power single‑supply op‑amps, covering features, specs and typical circuits.
This document describes the AD820, AD822 and AD824 operational amplifiers from Analog Devices. It outlines their main features, such as low offset voltage, low noise, rail‑to‑rail operation and wide supply range, and provides guidance for using them in precision measurement and sensor interface applications.
The note includes electrical characteristics, pin configurations, typical application circuits, and performance graphs. It also gives design recommendations for biasing, gain setting and output swing to help engineers integrate these amplifiers into low‑power single‑supply designs. This manual is written in Chinese.
| Input offset voltage (typ) | 0.4 mV (AD820), 0.5 mV (AD822), 0.5 mV (AD824) |
|---|---|
| Gain‑bandwidth product | 1.9 MHz (AD820/AD822), 2.0 MHz (AD824) |
| Output swing (typ) | ≈ 15.2 V (±VS) with 20 V supply |
Typical input offset voltage is 0.4 mV for AD820 and 0.5 mV for AD822 and AD824.
The gain‑bandwidth product is 1.9 MHz for AD820 and AD822, and 2.0 MHz for AD824.
Yes, they are designed for single‑supply rail‑to‑rail low‑power operation.