AD5291/AD5292

Data Sheet

TABLE OF CONTENTS

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

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

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

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

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

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

Electrical Characteristics—AD5291 .......................................... 3

Resistor Performance Mode Code Range ................................. 4

Electrical Characteristics—AD5292 .......................................... 6

Resistor Performance Mode Code Range ................................. 7

Interface Timing Specifications.................................................. 8

Absolute Maximum Ratings.......................................................... 10

Thermal Resistance .................................................................... 10

ESD Caution................................................................................ 10

Pin Configuration and Function Descriptions........................... 11

Typical Performance Characteristics ........................................... 12

Test Circuits..................................................................................... 21

Theory of Operation ...................................................................... 22

Serial Data Interface................................................................... 22

Shift Register ............................................................................... 22

RDAC Register............................................................................ 22

20-TP Memory ........................................................................... 23

Write Protection ......................................................................... 23

Basic Operation .......................................................................... 24

20-TP Readback and Spare Memory Status............................ 24

Shutdown Mode ......................................................................... 24

Resistor Performance Mode...................................................... 25

Reset............................................................................................. 25

SDO Pin and Daisy-Chain Operation..................................... 25

RDAC Architecture.................................................................... 25

Programming the Variable Resistor......................................... 26

Programming the Potentiometer Divider............................... 26

EXT_CAP Capacitor.................................................................. 27

Terminal Voltage Operating Range ......................................... 27

Applications Information .............................................................. 28

High Voltage DAC...................................................................... 28

Programmable Voltage Source with Boosted Output ........... 28

High Accuracy DAC .................................................................. 28

Variable Gain Instrumentation Amplifier .............................. 28

Audio Volume Control .............................................................. 29

Outline Dimensions....................................................................... 30

Ordering Guide .......................................................................... 30

REVISION HISTORY

12/14—Rev. D to Rev. E

Changes to Shift Register Section and Table 11 ......................... 22

9/10—Rev. C to Rev. D

Changes to SDO Pin and Daisy-Chain Operation Section....... 25

3/10—Rev. B to Rev. C

Changes to Revision History........................................................... 2

Changes to Figure 3 and Figure 4 Captions .................................. 9

3/10—Rev. A to Rev. B

Changes to Data Sheet Title ............................................................ 1

Changes to General Description Section ...................................... 1

Changes to Theory of Operation Section.................................... 22

12/09—Rev. 0 to Rev. A

Added 50 kΩ and 100 kΩ specifications.........................Universal

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

Changes to Table 1.............................................................................3

Changes to Table 2.............................................................................4

Added Table 3 ....................................................................................5

Changes to Table 4.............................................................................6

Changes to Table 5.............................................................................7

Added Table 6 ....................................................................................8

Change to Table 7 ..............................................................................8

Changes to Absolute Maximum Rating Section ........................ 10

Changes Table 9 .............................................................................. 11

Changes to Typical Performance Characteristics Section ........ 12

Changes to Ordering Guide.......................................................... 30

4/09—Revision 0: Initial Version

Rev. E | Page 2 of 30