AD7988-1/AD7988-5

Data Sheet

Rev. B | Page 2 of 24

TABLE OF CONTENTS

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

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

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

Typical Application Diagram.......................................................... 1

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

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

Timing Specifications .................................................................. 5

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configurations and Function Descriptions ........................... 8

Terminology ...................................................................................... 9

Typical Performance Characteristics ........................................... 10

Theory of Operation ...................................................................... 14

Circuit Information.................................................................... 14

Converter Operation.................................................................. 14

Typical Connection Diagram ................................................... 15

Analog Inputs ............................................................................. 16

Driver Amplifier Choice ........................................................... 16

Voltage Reference Input ............................................................ 17

Power Supply............................................................................... 17

Digital Interface.......................................................................... 17

CS Mode, 3-Wire........................................................................ 18

CS Mode 4-Wire......................................................................... 19

Chain Mode ................................................................................ 20

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

Interfacing to Blackfin® DSP..................................................... 21

Layout .......................................................................................... 21

Evaluating the Performance of the AD7988-x........................ 21

Outline Dimensions....................................................................... 22

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

REVISION HISTORY

5/12—Rev. A to Rev. B

Changes to Table 3.............................................................................4

Updated Outline Dimensions ........................................................22

2/12—Rev. 0 to Rev. A

Added LFCSP Thermal Impedance Values................................... 7

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

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

2/12—Revision 0: Initial Version