AD8253

Data Sheet

Rev. B | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Diagram ........................................................................... 5

Absolute Maximum Ratings............................................................ 6

Maximum Power Dissipation ..................................................... 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 16

Gain Selection ............................................................................. 16

Power Supply Regulation and Bypassing ................................ 18

Input Bias Current Return Path ............................................... 18

Input Protection ......................................................................... 18

Reference Terminal .................................................................... 19

Common-Mode Input Voltage Range ..................................... 19

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

RF Interference ........................................................................... 19

Driving an Analog-to-Digital Converter ................................ 20

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

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

Setting Gains with a Microcontroller ...................................... 21

Data Acquisition......................................................................... 22

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

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

REVISION HISTORY

10/12—Rev. A to Rev. B

Changed Digital Input Voltage Low Maximum Parameter from

1.2 V to 2.1 V and Changed Digital Input Voltage High Typical

Parameter from 1.5 V to 2.8 V........................................................ 4

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

8/08—Rev. 0 to Rev. A

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

7/08—Revision 0: Initial Version