Datasheet

AD8237 Data Sheet
Rev. 0 | 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 ...................................................................... 20
Architecture ................................................................................. 20
Setting the Gain .......................................................................... 20
Gain Accuracy............................................................................. 21
Clock Feedthrough ..................................................................... 21
Input Voltage Range ................................................................... 21
Input Protection ......................................................................... 22
Filtering Radio Frequency Interference .................................. 22
Using the Reference Pin ............................................................ 22
Layout .......................................................................................... 23
Input Bias Current Return Path ............................................... 23
Applications Information .............................................................. 25
Battery Current Monitor ........................................................... 25
Programmable Gain In-Amp.................................................... 25
AD8237 in an Electrocardiogram (ECG) Front End............. 26
Outline Dimensions ....................................................................... 27
Ordering Guide .......................................................................... 27
REVISION HISTORY
8/12—Revision 0: Initial Version