AD8221
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Connection Diagram ....................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 8
Thermal Characteristics .............................................................. 8
ESD Caution.................................................................................. 8
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 16
Gain Selection ............................................................................. 17
REVISION HISTORY
9/07—Rev. A to Rev. B
Changes to Features.......................................................................... 1
Changes to Table 1 Layout............................................................... 3
Changes to Table 2 Layout............................................................... 5
Changes to Figure 15...................................................................... 11
Changes to Figures 32 .................................................................... 13
Changes to Figure 33, Figure 34, and Figure 35 ......................... 14
Updated Outline Dimensions ....................................................... 21
Changes to Ordering Guide .......................................................... 22
11/03—Rev. 0 to Rev. A
Changes to Features.......................................................................... 1
Changes to Specifications Section.................................................. 4
Changes to Theory of Operation Section.................................... 13
Changes to Gain Selection Section............................................... 14
10/03—Revision 0: Initial Version
Layout .......................................................................................... 17
Reference Terminal .................................................................... 18
Power Supply Regulation and Bypassing ................................ 18
Input Bias Current Return Path ............................................... 18
Input Protection ......................................................................... 18
RF Interference ........................................................................... 19
Precision Strain Gage................................................................. 19
Conditioning ±10 V Signals for a +5 V Differential Input
ADC ............................................................................................. 19
AC-Coupled Instrumentation Amplifier ................................ 20
Outline Dimensions ....................................................................... 21
Ordering Guide .......................................................................... 22
Rev. B | Page 2 of 24