Data Sheet

AD8422

TABLE OF CONTENTS

analog.com

Rev. C | 2 of 28

Features................................................................ 1

Applications........................................................... 1

Typical Application Diagram.................................. 1

General Description...............................................1

Specifications........................................................ 3

SOIC_N..............................................................3

MSOP.................................................................5

LFCSP................................................................8

Absolute Maximum Ratings................................. 11

Thermal Resistance..........................................11

Electrostatic Discharge (ESD) Ratings.............11

ESD Caution.....................................................11

Pin Configurations and Function Descriptions.....12

Typical Performance Characteristics................... 13

Theory of Operation.............................................22

Architecture...................................................... 22

Gain Selection..................................................22

Reference Terminal.......................................... 22

Input Voltage Range.........................................23

Layout...............................................................23

Input Bias Current Return Path........................ 24

Input Voltages Beyond the Supply Rails.......... 24

RF Interference (RFI)....................................... 25

Applications Information...................................... 26

Precision Bridge Conditioning.......................... 26

Process Control Analog Input...........................26

Outline Dimensions............................................. 27

Ordering Guide.................................................28

REVISION HISTORY

11/2022—Rev. B to Rev. C

Change to Features Section............................................................................................................................ 1

Changes to Quiescent Current Parameter, Table 1......................................................................................... 3

Changes to Quiescent Current Parameter, Table 2......................................................................................... 5

Changes to Quiescent Current Parameter, Table 3......................................................................................... 8

Changes to Table 7........................................................................................................................................12

Moved Figure 4.............................................................................................................................................. 13

Changes to Figure 30.................................................................................................................................... 17