Datasheet

AD5258
Rev. 0 | Page 2 of 24
TABLE OF CONTENTS
Specifications..................................................................................... 3
Electrical Characteristics............................................................. 3
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Test Circu its ..................................................................................... 13
Theory of Operation ...................................................................... 14
Programming the Variable Resistor......................................... 14
Programming the Potentiometer Divider............................... 14
I
2
C Interface..................................................................................... 15
I
2
C Byte Formats............................................................................. 16
Generic Interface ........................................................................ 16
Write Modes ................................................................................ 17
Read Modes................................................................................. 17
Store/Restore Modes .................................................................. 17
Toler ance Readback Mode s ...................................................... 18
ESD Protection of Digital Pins and Resistor Terminals........ 19
Power-Up Sequence ................................................................... 19
Layout and Power Supply Bypassing ....................................... 19
Multiple Devices on One Bus ................................................... 19
Evaluation Board ........................................................................ 19
Display Applications ...................................................................... 20
Circuitry ...................................................................................... 20
Outline Dimensions ....................................................................... 21
Ordering Guide .......................................................................... 21
REVISION HISTORY
3/05—Revision 0: Initial Version