AD8231

Data Sheet

Rev. E | Page 2 of 24

TABLE OF CONTENTS

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

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

Functional Block Diagram .............................................................. 1

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

Revision History ............................................................................... 2

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

Absolute Maximum Ratings............................................................ 7

Thermal Resistance ...................................................................... 7

Maximum Power Dissipation ..................................................... 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ............................................. 9

Instrumentation Amplifier Performance Curves..................... 9

Operational Amplifier Performance Curves .......................... 15

Performance Curves Valid for Both Amplifiers ..................... 17

Theory of Operation ...................................................................... 18

Amplifier Architecture .............................................................. 18

Gain Selection............................................................................. 18

Reference Terminal .................................................................... 18

Layout .......................................................................................... 19

Input Bias Current Return Path ............................................... 19

Input Protection ......................................................................... 19

RF Interference ........................................................................... 20

Common-Mode Input Voltage Range..................................... 20

Reducing Noise........................................................................... 20

Applications Information .............................................................. 21

Differential Output .................................................................... 21

Multiplexing................................................................................ 21

Using the AD8231 with Bipolar Supplies................................ 21

Sallen Key Filter.......................................................................... 22

Outline Dimensions....................................................................... 23

Ordering Guide .......................................................................... 23

Automotive Products................................................................. 23

REVISION HISTORY

10/2017—Rev. D to Rev. E

Changed CP-16-17 to CP-16-23 .................................. Throughout

Updated Outline Dimensions....................................................... 23

Changes to Ordering Guide .......................................................... 23

3/2017—Rev. C to Rev. D

Updated Outline Dimensions....................................................... 23

Changes to Ordering Guide .......................................................... 23

12/2014—Rev. B to Rev. C

Changes to Figure 12 to Figure 14 Captions............................... 10

Changes to Figure 19 and Figure 20............................................. 11

Updated Outline Dimensions....................................................... 23

Changes to Ordering Guide .......................................................... 23

4/2011—Rev. A to Rev. B

Changes to Features Section and Applications Section............... 1

Added Exposed Pad Notation to Outline Dimensions ............. 23

Changes to Ordering Guide .......................................................... 23

Added Automotive Products Section........................................... 23

9/2007—Rev. 0 to Rev. A

Changes to Features and General Description ............................. 1

Changes to Table 2............................................................................ 3

Changes to Table 3............................................................................ 5

Changes to Typical Performance Characteristics Layout............ 9

Inserted Figure 3 to Figure 8; Renumbered Sequentially............ 9

Inserted Figure 9; Renumbered Sequentially.............................. 10

Inserted Figure 16, and Figure 18 to Figure 20; Renumbered

Sequentially ..................................................................................... 11

Inserted Figure 24; Renumbered Sequentially ........................... 12

Deleted Figure 28 and Figure 29; Renumbered Sequentially ... 13

Inserted Figure 33 and Figure 34; Renumbered Sequentially .. 14

Inserted Figure 41 to Figure 46; Renumbered Sequentially ..... 16

Inserted Figure 48; Renumbered Sequentially ........................... 17

Changes to Gain Selection Section and Figure 50 ..................... 18

Added Input Protection Section................................................... 19

Added Reducing Noise Section .................................................... 20

Changes to Multiplexing Section ................................................. 21

Added Using the AD8231 with Bipolar Supplies Section......... 21

Added Sallen Key Filter Section ................................................... 22

Changes to Ordering Guide.......................................................... 23

5/2007—Revision 0: Initial Version