AD8221

Rev. A | Page 2 of 20

TABLE OF CONTENTS

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

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Typical Performance Characteristics ............................................. 6

Theory of Operation ...................................................................... 13

Gain Selection ............................................................................. 14

Layout........................................................................................... 14

Reference Terminal .................................................................... 15

Power Supply Regulation and Bypassing ................................ 15

Input Bias Current Return Path................................................ 15

Input Protection ......................................................................... 15

RF Interference ........................................................................... 16

Precision Strain Gage................................................................. 16

Conditioning ±10 V Signals for a +5 V Differential Input

ADC ............................................................................................. 17

AC-Coupled Instrumentation Amplifier ................................ 17

Outline Dimensions ....................................................................... 18

Ordering Guide .......................................................................... 18

REVISION HISTORY

Revision A

11/03—Data Sheet Changed from Rev. 0 to Rev. A

Change

Page

Changes to Features...............................................................................1

Changes to Specifications section .......................................................4

Change to Theory of Operation section...........................................13

Change to Gain Selection section......................................................14