Key facts
- Brand
- Analog Devices
- Model
- AD8421
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 2
- Languages
- ZH
- Last added
- 2026-10-03
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Analog Devices AD8421 Instrumentation Amplifier Datasheet
The AD8421 from Analog Devices is a high‑speed instrumentation amplifier designed for signal‑conditioning and data‑acquisition applications. It offers ultra‑low voltage noise of 3 nV/√Hz, low current noise of 200 fA/√Hz, and a wide bandwidth of up to 10 MHz at a gain of 1.
The device operates from dual supplies of ±2.5 V to ±18 V (or a single supply of 5 V to 36 V), provides a static current of about 2 mA, and supports gain settings from 1 to 10 000 via a single external resistor. Its high CMRR (up to 94 dB) and robust input protection make it suitable for precision measurement in noisy environments. This manual is written in Chinese.
All Analog Devices AD8421 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What gain range does the AD8421 support?
The gain can be set from 1 to 10 000 using a single external resistor.
From: Analog Devices AD8421 Instrumentation Amplifier Datasheet
What are the absolute maximum supply voltages?
The absolute maximum supply voltage is ±18 V.
From: Analog Devices AD8421 Instrumentation Amplifier Datasheet