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AD5248BRMZ10 Datasheet(PDF) 2 Page - Analog Devices

No. de pieza AD5248BRMZ10
Descripción Electrónicos  Dual, 256-Position, I2C-Compatible Digital Potentiometers
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD5248BRMZ10 Datasheet(HTML) 2 Page - Analog Devices

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AD5243/AD5248
Data Sheet
Rev. B | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
 
Applications....................................................................................... 1
 
Functional Block Diagrams............................................................. 1
 
General Description ......................................................................... 1
 
Revision History ............................................................................... 2
 
Specifications..................................................................................... 3
 
Electrical Characteristics: 2.5 kΩ Version................................. 3
 
Electrical Characteristics: 10 kΩ, 50 kΩ, and 100 kΩ
Versions.......................................................................................... 4
 
Timing Characteristics: All Versions ......................................... 5
 
Absolute Maximum Ratings............................................................ 6
 
ESD Caution.................................................................................. 6
 
Pin Configurations and Function Descriptions ........................... 7
 
Typical Performance Characteristics ............................................. 8
 
Test Circuits..................................................................................... 12
 
Theory of Operation ...................................................................... 13
 
Programming the Variable Resistor and Voltage ................... 13
 
Programming the Potentiometer Divider............................... 14
 
ESD Protection ........................................................................... 14
 
Terminal Voltage Operating Range ......................................... 14
 
Power-Up Sequence ................................................................... 14
 
Layout and Power Supply Bypassing ....................................... 14
 
Constant Bias to Retain Resistance Setting............................. 15
 
I2C Interface .................................................................................... 16
 
I2C Compatible, 2-Wire Serial Bus .......................................... 16
 
I2C Controller Programming.................................................... 18
 
Outline Dimensions ....................................................................... 19
 
Ordering Guide .......................................................................... 19
 
REVISION HISTORY
4/12—Rev. A to Rev. B
Changes to Rheostat Operation Section, Table 7, and
Table 8 ...............................................................................................13
Changes to Voltage Output Operation Section ...........................14
Deleted Evaluation Board Section and Figure 45, Renumbered
Sequentially ......................................................................................15
Changes to Table 13.........................................................................17
Updated Outline Dimensions ........................................................19
Changes to Ordering Guide ...........................................................19
4/09—Rev. 0 to Rev. A
Changes to DC Characteristics—Rheostat Mode Parameter and
to DC Characteristics—Potentiometer Divider Mode Parameter,
Table 1 .................................................................................................3
Moved Figure 3 ..................................................................................5
Updated Outline Dimensions........................................................19
Changes to Ordering Guide ...........................................................19
1/04—Revision 0: Initial Version


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