AD7989-1/AD7989-5

Data Sheet

Rev. B | Page 2 of 24

TABLE OF CONTENTS

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

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

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

Typical Applications Circuit ......................................................1

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

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

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

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

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

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

Typical Performance Characteristics .........................................9

Terminology ............................................................................12

Theory of Operation................................................................13

Circuit Information .............................................................13

Converter Operation............................................................13

Typical Connection Diagram...............................................14

Analog Inputs......................................................................15

Driver Amplifier Choice......................................................15

Single-Ended to Differential Driver.....................................16

Voltage Reference Input.......................................................16

Power Supply.......................................................................16

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

CS Mode, 3-Wire.................................................................17

CS Mode, 4-Wire.................................................................18

Chain Mode.........................................................................19

Applications Information........................................................20

Interfacing to Blackfin® DSP................................................20

Layout..................................................................................20

Evaluating AD7989-1/AD7989-5 Performance.......................21

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

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

REVISION HISTORY

1/2017—Rev.A to Rev. B

Change to Table 1 ......................................................................1

Changed VIO = 2.3 V to 5.5 V to VIO = 1.71 V to 5.5 V...........3

Changes to Table 2.....................................................................3

Changed VIO = 2.3 V to 5.5 V to VIO = 1.71 V to 5.5 V...........4

Deleted VIO Range Parameter, Table 3......................................4

Changes to Table 4.....................................................................5

Added Table 5; Renumbered Sequentially .................................6

Changes to Figure 9...................................................................9

Change to Terminology Section ..............................................12

Changes to Figure 26...............................................................14

Changes to Table 9...................................................................15

Change to Single-Ended to Differential Driver Section Title...16

Changes to Figure 32...............................................................17

Changes to Figure 34...............................................................18

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

7/2014—Rev.0 to Rev. A

Changes to Features Section......................................................1

Changes to Table 1.....................................................................1

Changes to Table 8...................................................................15

1/2014—Revision0: Initial Version