AD5161 Просмотр технического описания (PDF) - Analog Devices

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AD5161

256-Position SPI/I2C Selectable Digital Potentiometer

Analog Devices 

AD5161

TABLE OF CONTENTS

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

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

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

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

Pin Configuration............................................................................. 1

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

Electrical Characteristics—5 kΩ Version ...................................... 3

Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions....... 4

Timing Characteristics—5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Versions 5

Absolute Maximum Ratings1 .......................................................... 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Test Circuits..................................................................................... 12

REVISION HISTORY

8/12—Rev. A to Rev. B

Changes to Applications Section .................................................... 1

Updated Outline Dimensions ....................................................... 19

4/09—Rev. 0 to Rev. A

Changes to Ordering Guide .......................................................... 19

5/03—Revision 0: Initial Version

Data Sheet

SPI Interface .................................................................................... 13

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

Theory of Operation ...................................................................... 15

Programming the Variable Resistor......................................... 15

Programming the Potentiometer Divider ............................... 16

Pin Selectable Digital Interface................................................. 16

Level Shifting for Bidirectional Interface ................................ 18

ESD Protection ........................................................................... 18

Terminal Voltage Operating Range ......................................... 18

Power-Up Sequence ................................................................... 18

Layout and Power Supply Bypassing ....................................... 18

Outline Dimensions ....................................................................... 19

Ordering Guide .......................................................................... 19

Rev. B | Page 2 of 20

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