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AD5227 Datasheet(PDF) 2 Page - Analog Devices

Part No. AD5227
Description  64-Position Up/Down Control Digital Potentiometer
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5227 Datasheet(HTML) 2 Page - Analog Devices

 
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AD5227
Rev. B | Page 2 of
16
TABLE OF CONTENTS
Electrical Characteristics ................................................................. 3
 
Interface Timing Diagrams ......................................................... 4
 
Absolute Maximum Ratings............................................................ 5
 
ESD Caution.................................................................................. 5
 
Pin Configuration and Function Descriptions............................. 6
 
Typical Performance Characteristics ............................................. 7
 
Theory of Operation ...................................................................... 10
 
Programming the Digital Potentiometers............................... 10
 
Digital Interface .......................................................................... 11
 
Terminal Voltage Operation Range ......................................... 11
 
Power-Up and Power-Down Sequences.................................. 11
 
Layout and Power Supply Biasing ............................................ 11
 
Applications..................................................................................... 12
 
Manual Control with Toggle and Pushbutton Switches........ 12
 
Manual Control with Rotary Encoder..................................... 12
 
Adjustable LED Driver .............................................................. 12
 
Adjustable Current Source for LED Driver ............................ 12
 
Adjustable High Power LED Driver ........................................ 13
 
Automatic LCD Panel Backlight Control................................ 13
 
6-Bit Controller .......................................................................... 13
 
Constant Bias with Supply to Retain Resistance Setting....... 14
 
Outline Dimensions ....................................................................... 15
 
Ordering Guide .......................................................................... 15
 
REVISION HISTORY
5/09—Rev. A to Rev. B
Changes to Table 2……………………………………………3
4/09—Rev. 0 to Rev. A
Changes to Table 2……………………………………………3
Changes to Ordering Guide …………………………………15
3/04—Revision 0: Initial Version


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