AD8222
TABLE OF CONTENTS
Features .............................................................................................. 1
Package Considerations............................................................. 16
Layout .......................................................................................... 16
Input Bias Current Return Path ............................................... 17
Input Protection ......................................................................... 18
RF Interference ........................................................................... 18
Common-Mode Input Voltage Range..................................... 18
Applications Information.............................................................. 19
Differential Output .................................................................... 19
Driving a Differential Input ADC............................................ 20
Precision Strain Gage................................................................. 20
Driving Cabling.......................................................................... 21
Outline Dimensions....................................................................... 22
Ordering Guide .......................................................................... 23
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 15
Amplifier Architecture .............................................................. 15
Gain Selection............................................................................. 15
Reference Terminal .................................................................... 16
REVISION HISTORY
2/10—Rev. 0 to Rev. A
Changes to Reference Terminal Section, Figure 45, and Package
Considerations Section.................................................................. 16
Deleted Thermal Pad Section ....................................................... 16
Added Package Without Thermal Pad and Package with
Thermal Pad Sections .................................................................... 16
Changes to Figure 46...................................................................... 17
Deleted Solder Wash Section........................................................ 17
Changes to RFI and Antialising Filter Section ........................... 20
Updated Outline Dimensions....................................................... 22
Changes to Ordering Guide.......................................................... 23
Added LFCSP_VQ, CP-16-13 Package............................Universal
Changes to Features Section and Table 1 ...................................... 1
Changed VIN+ to V+IN, VIN− to V−IN, and T to TA Throughout..... 3
Change to Reference Input Parameter, Table 2............................. 4
Changed Output Short-Circuit Current to Output Short-Circuit
Duration, Table 5 .............................................................................. 6
Changes to Thermal Resistance Section and Table 6................... 6
Changes to Figure 2.......................................................................... 7
Changes to Figure 19...................................................................... 10
Changes to Figure 43...................................................................... 14
7/06—Revision 0: Initial Version
Rev. A | Page 2 of 24