AD5241/AD5242
TABLE OF CONTENTS
Features .............................................................................................. 1
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
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
2/02—Rev. 0 to Rev. A
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
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
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
Rev. C | Page 2 of 20