AD5247 查看數據表（PDF） - Analog Devices

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AD5247

128-Position I2C Compatible Digital Potentiometer

Analog Devices 

AD5247

TABLE OF CONTENTS

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 Ratings............................................................ 6

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

Test Circuits..................................................................................... 11

I2C Interface..................................................................................... 12

Operation......................................................................................... 13

Programming the Variable Resistor ......................................... 13

Programming the Potentiometer Divider ............................... 14

I2C Compatible 2-Wire Serial Bus............................................ 14

REVISION HISTORY

Revision 0: Initial Version

Level Shifting for Bidirectional Interface ................................ 15

ESD Protection ........................................................................... 15

Terminal Voltage Operating Range.......................................... 15

Maximum Operating Current .................................................. 15

Power-Up Sequence ................................................................... 15

Layout and Power Supply Bypassing ....................................... 16

Constant Bias to Retain Resistance Setting............................. 16

Evaluation Board ........................................................................ 16

Pin Configuration and Function Descriptions........................... 17

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

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

Rev. 0 | Page 2 of 20

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