AD5241 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD5241

I2C-Compatible, 256-Position Digital Potentiometers

Analog Devices 

AD5241/AD5242

TABLE OF CONTENTS

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

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

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

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

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

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

10 kΩ, 100 kΩ, 1 MΩ Version .................................................... 3

Timing Diagrams.......................................................................... 5

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

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

Pin Configurations and Function Descriptions ........................... 7

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

REVISION HISTORY

12/09—Rev. B to Rev. C

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

Changes to 10 kΩ, 100 kΩ, 1 MΩ Version Section...................... 3

Changes to Table 3............................................................................ 6

Deleted Digital Potentiometer Selection Guide Section ........... 14

Changed Self-Contained Shutdown Function Section to

Shutdown Function Section .......................................................... 15

Changes to Shutdown Function Section ..................................... 15

Changes to Ordering Guide .......................................................... 18

8/02—Rev. A to Rev. B

Additions to Features ....................................................................... 1

Changes to General Description .................................................... 1

Changes to Specifications ................................................................ 2

Changes to Absolute Maximum Ratings ....................................... 4

Additions to Ordering Guide.......................................................... 4

Changes to TPC 8 and TPC 9 ......................................................... 8

Changes to Readback RDAC Value Section................................ 11

Changes to Additional Programmable Logic Output Section.. 11

Added Self-Contained Shutdown Section................................... 12

Added Figure 8................................................................................ 12

Changes to Digital Potentiometer Selection Guide ................... 14

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

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

Programming the Variable Resistor......................................... 12

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

Digital Interface .......................................................................... 13

Readback RDAC Value .............................................................. 14

Multiple Devices on One Bus ................................................... 14

Level-Shift for Bidirectional Interface ..................................... 14

Additional Programmable Logic Output ................................ 15

Shutdown Function.................................................................... 15

Outline Dimensions ....................................................................... 16

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

2/02—Rev. 0 to Rev. A

Edits to Features.................................................................................1

Edits to Functional Block Diagrams ...............................................1

Edits to Absolute Maximum Ratings ..............................................4

Changes to Ordering Guide .............................................................4

Edits to Pin Function Descriptions.................................................5

Edits to Figures 1, 2, 3 .......................................................................6

Added Readback RDAC Value Section, Additional

Programmable Logic Output Section, and Figure 7;

Renumbered Sequentially ............................................................. 11

Changes to Digital Potentiometer Selection Guide ................... 14

Rev. C | Page 2 of 20

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