Datasheet

AD8226 Data Sheet
Rev. C | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configuration ............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 7
Thermal Resistance ...................................................................... 7
ESD Caution .................................................................................. 7
Pin Configuration and Function Descriptions ............................. 8
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 19
Architecture ................................................................................. 19
Gain Selection ............................................................................. 19
Reference Terminal .................................................................... 20
Input Voltage Range ................................................................... 20
Layout .......................................................................................... 20
Input Bias Current Return Path ............................................... 21
Input Protection ......................................................................... 22
Radio Frequency Interference (RFI) ........................................ 22
Applications Information .............................................................. 23
Differential Drive ....................................................................... 23
Precision Strain Gage ................................................................. 24
Driving an ADC ......................................................................... 24
Outline Dimensions ....................................................................... 25
Ordering Guide .......................................................................... 25
REVISION HISTORY
9/12—Rev. B to Rev. C
Changes to CMRR, Voltage Offset, Input Offset Current, and
Gain Error Parameters, Table 2....................................................... 3
Changes to CMRR, Voltage Offset, and Input Offset Current
Parameters, Table 2 ........................................................................... 5
3/11—Rev. A to Rev. B
Added AD8235/AD8236 to Table 1 ............................................... 1
Changes to Endnote 1, Table 2 ........................................................ 4
Change Endnote 2 Placement in Total Noise Equation, Table 3 ...... 5
Added G > 1 BRZ, BRMZ Max Parameter .................................... 6
Changes to Endnote 1, Table 3 ........................................................ 6
Changes to Figure 18 ...................................................................... 11
Changes to Figure 37 ...................................................................... 14
Changes to Figure 42 ...................................................................... 15
Updated Outline Dimensions ....................................................... 25
7/09—Rev. 0 to Rev. A
Added BRZ and BRM Models .......................................... Universal
Changes to Features Section ............................................................ 1
Changes to Table 1 ............................................................................. 1
Changes to General Description Section ....................................... 1
Changes to Gain vs. Temperature Parameter, Output Parameter,
and Operating Range Parameter, Table 2 ........................................... 4
Changes to Common-Mode Rejection Ratio (CMRR) Parameter
and to Input Offset, V
OSO
, Average Temperature Coefficient
Parameter, Table 3 ......................................................................... 5
Changes to Gain vs. Temperature Parameter, Table 3 .................. 6
Changes to Gain Selection Section .............................................. 19
Changes to Reference Terminal Section and Input Voltage
Range Section.............................................................................. 20
Changes to Ordering Guide .......................................................... 25
1/09—Revision 0: Initial Version