AD5293

Rev. 0 | Page 2 of 20

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

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

 

Electrical Characteristics..............................................................3

 

Resistor Performance (R-PERF) Mode Code Range ................4

 

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

 

Timing Diagrams...........................................................................6

 

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

 

Thermal Resistance .......................................................................7

 

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

 

Pin Configuration and Function Descriptions..............................8

 

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

 

Test Circuits..................................................................................... 13

 

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

 

Serial Data Interface................................................................... 14

 

Shift Register ............................................................................... 14

 

RDAC Register............................................................................ 14

 

Write Protection ......................................................................... 14

 

Basic Operation .......................................................................... 14

 

Shutdown Mode.......................................................................... 14

 

Reset ............................................................................................. 15

 

Resistor Performance Mode...................................................... 15

 

Daisy-Chain Operation ............................................................. 15

 

RDAC Architecture .................................................................... 16

 

Programming the Variable Resistor......................................... 16

 

Programming the Potentiometer Divider ............................... 16

 

EXT_CAP Capacitor.................................................................. 17

 

Terminal Voltage Operating Range.......................................... 17

 

Applications Information .............................................................. 18

 

High Voltage DAC...................................................................... 18

 

Programmable Voltage Source with Boosted Output............ 18

 

High Accuracy DAC .................................................................. 18

 

Audio Volume Control .............................................................. 19

 

Outline Dimensions ....................................................................... 20

 

Ordering Guide........................................................................... 20

 

REVISION HISTORY

4/09—Revision 0: Initial Version