AD5123 데이터 시트보기 (PDF) - Analog Devices

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AD5123

Quad Channel, 128-/256-Position, I2C, Nonvolatile Digital Potentiometer

Analog Devices 

AD5123/AD5143

TABLE OF CONTENTS

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

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

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

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

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

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

Electrical Characteristics—AD5123 .......................................... 3

Electrical Characteristics—AD5143 .......................................... 6

Interface Timing Specifications.................................................. 9

Shift Register and Timing Diagrams ....................................... 10

Absolute Maximum Ratings.......................................................... 11

Thermal Resistance .................................................................... 11

ESD Caution................................................................................ 11

Pin Configuration and Function Descriptions........................... 12

Typical Performance Characteristics ........................................... 13

Test Circuits..................................................................................... 18

REVISION HISTORY

3/13—Rev. 0 to Rev. A

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

10/12—Revision 0: Initial Version

Data Sheet

Theory of Operation ...................................................................... 19

RDAC Register and EEPROM.................................................. 19

Input Shift Register .................................................................... 19

I2C Serial Data Interface ............................................................ 19

I2C Address.................................................................................. 19

Advanced Control Modes ......................................................... 21

EEPROM or RDAC Register Protection ................................. 22

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

Programming the Variable Resistor......................................... 25

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

Terminal Voltage Operating Range ......................................... 26

Power-Up Sequence ................................................................... 26

Layout and Power Supply Biasing ............................................ 26

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

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

Rev. A | Page 2 of 28

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