AD5170BRM10(RevA) Просмотр технического описания (PDF) - Analog Devices

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AD5170BRM10
(Rev.:RevA)

256-Position Two-Time Programmable I2C Digital Potentiometer

Analog Devices 

AD5170

TABLE OF CONTENTS

Electrical Characteristics — 2.5 kΩ ............................................... 3

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

Timing Characteristics — 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

Versions.............................................................................................. 5

Absolute Maximum Ratings............................................................ 6

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

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

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

Theory of Operation ...................................................................... 12

One-Time Programming (OTP) .............................................. 12

Programming the Variable Resistor and Voltage ................... 12

Programming the Potentiometer Divider ............................... 13

ESD Protection ........................................................................... 14

REVISION HISTORY

11/04—Data Sheet Changed from Rev. 0 to Rev. A

Changes to Electrical Characteristics Table 1 ............................... 3

Changes to Electrical Characteristics Table 2 ............................... 4

Changes to One-Time Programming ......................................... 12

Changes to Figure 37, Figure 38, and Figure 39 ........................ 14

Changes to Power Supply Considerations................................... 14

Changes to Figure 40...................................................................... 15

Changes to Layout Considerations .............................................. 15

11/03—Revision 0: Initial Version

Terminal Voltage Operating Range ......................................... 14

Power-Up Sequence ................................................................... 14

Power Supply Considerations................................................... 14

Layout Considerations............................................................... 15

Evaluation Software/Hardware..................................................... 16

Software Programming ............................................................. 16

I2C Interface .................................................................................... 18

I2C Compatible 2-Wire Serial Bus ........................................... 20

Pin Configuration and Function Descriptions........................... 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

Rev. A | Page 2 of 24

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