AD5251 Analog Devices, AD5251 Datasheet - Page 2

• Manufacturer Part Number: AD5251
• Description: (AD5251 / AD5252) Dual 64-and 256-Position I2C Nonvolatile Memory Digital Potentiometers
• Manufacturer: Analog Devices

AD5251/AD5252
TABLE OF CONTENTS
Electrical Characteristics ................................................................. 3
Absolute Maximum Ratings............................................................ 8
Pin Configuration and Function Description .............................. 9
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I
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Typical Performance Characteristics ........................................... 16
Operational Overview.................................................................... 20
REVISION HISTORY
6/04—Revision 0: Initial Version
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C Interface General Description................................................ 10
C Interface Detail Description ................................................... 11
C Compatible 2-Wire Serial Bus................................................ 15
Interface Timing Characteristics................................................ 7
ESD Caution.................................................................................. 8
I
RDAC/EEMEM Write ............................................................... 11
Linear Increment and Decrement Commands ...................... 20
±6 dB Adjustments (Doubling/Halving WIPER Setting) ..... 20
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C Interface Timing Diagram.................................................... 9
Rev.0 | Page 2 of 28
Applications..................................................................................... 24
Outline Dimensions ....................................................................... 25
Digital Input/Output Configuration........................................ 21
Multiple Devices on One Bus ................................................... 21
Terminal Voltage Operation Range ......................................... 21
Power-Up and Power-Down Sequences.................................. 21
Layout and Power Supply Biasing ............................................ 22
Digital Potentiometer Operation ............................................. 22
Programmable Rheostat Operation......................................... 22
Programmable Potentiometer Operation ............................... 23
LCD Panel V
Current-Sensing Amplifier ....................................................... 24
Adjustable High Power LED Driver ........................................ 24
Ordering Guide .......................................................................... 25
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Adjustment ..................................................... 24