AD5253/AD5254

Rev. 0 | Page 2 of 28

TABLE OF CONTENTS

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

1 kΩ Version.................................................................................. 3

10 kΩ, 50 kΩ, 100 kΩ Versions ................................................... 5

Interface Timing Characteristics (All Parts)............................. 7

Absolute Maximum Ratings............................................................ 8

ESD Caution.................................................................................. 8

Pin Configuration and Functional Descriptions.......................... 9

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

I2C Interface..................................................................................... 14

I2C Interface General Description............................................ 14

I2C Interface Detail Description ............................................... 15

I2C Compatible 2-Wire Serial Bus............................................ 19

Theory of Operation ...................................................................... 20

Linear Increment and Decrement Commands ...................... 20

±6 dB Adjustments (Doubling/Halving Wiper Setting)........ 20

Digital Input/Output Configuration........................................ 21

Multiple Devices On One Bus .................................................. 21

Terminal Voltage Operation Range ......................................... 22

Power-Up and Power-Down Sequences.................................. 22

Layout and Power Supply Biasing ............................................ 22

Digital Potentiometer Operation ............................................. 23

Programmable Rheostat Operation......................................... 23

Programmable Potentiometer Operation ............................... 24

Applications..................................................................................... 25

RGB LED LCD Backlight Controller....................................... 25

Outline Dimensions ....................................................................... 27

Ordering Guide .......................................................................... 27

REVISION HISTORY

Revision 0: Initial Version