Datasheet

AD7984

Rev. A | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

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

Pin Configurations and Function Descriptions ........................... 7

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

Terminology .................................................................................... 11

Theory of Operation ...................................................................... 12

Circuit Information .................................................................... 12

Converter Operation .................................................................. 12

Typical Connection Diagram ................................................... 13

Analog Inputs .............................................................................. 14

Driver Amplifier Choice ........................................................... 14

Single-to-Differential Driver .................................................... 15

Voltage Reference Input ............................................................ 15

Power Supply ............................................................................... 15

Digital Interface .......................................................................... 16

Mode, 3-Wire Without Busy Indicator ............................. 17

Mode, 3-Wire with Busy Indicator .................................... 18

Mode, 4-Wire Without Busy Indicator ............................. 19

Mode, 4-Wire with Busy Indicator .................................... 20

Chain Mode Without Busy Indicator ...................................... 21

Chain Mode with Busy Indicator ............................................. 22

Application Hints ........................................................................... 23

Layout .......................................................................................... 23

Evaluating the AD7984 Performance ...................................... 23

Outline Dimensions ....................................................................... 24

Ordering Guide .......................................................................... 24

REVISION HISTORY

8/10—Rev. 0 to Rev. A

Updated Outline Dimensions ....................................................... 24

Changes to Ordering Guide .......................................................... 24

11/07—Revision 0: Initial Version