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Rev. B | Page 2 of

16

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 ...................................................................... 10

 

Programming the Digital Potentiometers............................... 10

 

Digital Interface .......................................................................... 11

 

Terminal Voltage Operation Range ......................................... 11

 

Power-Up and Power-Down Sequences.................................. 11

 

Layout and Power Supply Biasing ............................................ 11

 

Applications..................................................................................... 12

 

Manual Control with Toggle and Pushbutton Switches........ 12

 

Manual Control with Rotary Encoder..................................... 12

 

Adjustable LED Driver .............................................................. 12

 

Adjustable Current Source for LED Driver ............................ 12

 

Adjustable High Power LED Driver ........................................ 13

 

Automatic LCD Panel Backlight Control................................ 13

 

6-Bit Controller .......................................................................... 13

 

Constant Bias with Supply to Retain Resistance Setting....... 14

 

Outline Dimensions ....................................................................... 15

 

Ordering Guide .......................................................................... 15

 

REVISION HISTORY

5/09—Rev. A to Rev. B

Changes to Table 2……………………………………………3

4/09—Rev. 0 to Rev. A

Changes to Table 2……………………………………………3

Changes to Ordering Guide …………………………………15

3/04—Revision 0: Initial Version