AD5228

Rev. A | Page 2 of 20

TABLE OF CONTENTS

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

Interface Timing Diagrams ......................................................... 4

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ...................................................................... 11

Programming the Digital Potentiometers............................... 12

Controlling Inputs ...................................................................... 13

Terminal Voltage Operation Range ......................................... 13

Power-Up and Power-Down Sequences.................................. 14

Layout and Power Supply Biasing ............................................ 14

Applications..................................................................................... 15

Manual Adjustable LED Driver................................................ 15

Adjustable Current Source for LED Driver ............................ 15

Automatic LCD Panel Backlight Control................................ 16

Audio Amplifier with Volume Control ................................... 16

Constant Bias with Supply to Retain Resistance Setting...... 17

Outline Dimensions ....................................................................... 18

Ordering Guide .......................................................................... 18

REVISION HISTORY

4/09—Rev. 0 to Rev. A

Changes to Table 2………………………………………………3

4/04—Revision 0: Initial Version