AD8422 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8422
Manufacturer

ADI
ChipWorker Part#

CW1205326730
Description

High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
Documentation

Datasheet

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AD8422 Specifications

Attribute	Attribute Value

Part Number	AD8422
Manufacturer	ADI
ChipWorker Part#	CW1205326730
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

GENERAL DESCRIPTION
The AD8422 is a high precision, low power, low noise, rail-to-rail instrumentation amplifier that delivers the best performance per unit microampere in the industry. The AD8422 processes signals with ultralow distortion performance that is load independent over its full output range.
The AD8422 is the third generation development of the industry standard AD620. The AD8422 employs new process technologies and design techniques to achieve higher dynamic range and lower errors than its predecessors, while consuming less than one-third of the power. The AD8422 uses the high performance pinout introduced by the AD8221.
Very low bias current makes the AD8422 error-free with high source impedance, allowing multiple sensors to be multiplexed to the inputs. Low voltage noise and low current noise make the AD8422 an ideal choice for measuring a Wheatstone bridge.
FEATURES
Low power: 330 µA maximum quiescent current
Rail-to-rail output
Low noise and distortion
8 nV/√Hz maximum input voltage noise at 1 kHz
0.15 µV p-p RTI noise (G = 100)
0.5 ppm nonlinearity with 2 kΩ load (G = 1)
Excellent ac specifications
80 dB minimum CMRR at 7 kHz (G = 1)
2.2 MHz bandwidth (G = 1)
High precision dc performance (AD8422BRZ)
150 dB minimum CMRR (G = 1000)
0.04% maximum gain error (G = 1000)
0.3 µV/°C maximum input offset drift
0.5 nA maximum input bias current
Wide supply range
3.6 V to 36 V single supply
±1.8 V to ±18 V dual supply
Input overvoltage protection: 40 V from opposite supply
Gain range: 1 to 1000
APPLICATIONS
Medical instrumentation
Industrial process controls
Strain gages
Transducer interfaces
Precision data acquisition systems
Channel-isolated systems
Portable instrumentation

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