ad5231 Analog Devices, Inc., ad5231 Datasheet - Page 2

• Manufacturer Part Number: ad5231
• Description: Nonvolatile Memory, 1024-position Digital Potentiometer
• Manufacturer: Analog Devices, Inc.

AD5231
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Test Circuits..................................................................................... 13
Theory of Operation ...................................................................... 14
REVISION HISTORY
1/07—Rev. B to Rev. C
Updated Format.................................................................. Universal
Changes to Dynamic Characteristics Specifications.....................4
Changes to Table 2 Footnote............................................................5
Changes to Table 3.............................................................................7
Changes to Ordering Guide ...........................................................27
9/04—Rev. A to Rev. B
Updated Format.................................................................. Universal
Changes to Table 20.........................................................................23
Changes to Resistance Scaling Section .........................................25
Changes to Ordering Guide ...........................................................27
Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions .. 3
Timing Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions ...... 5
ESD Caution.................................................................................. 7
Scratchpad and EEMEM Programming.................................. 14
Basic Operation .......................................................................... 14
EEMEM Protection.................................................................... 14
Digital Input/Output Configuration........................................ 15
Serial Data Interface................................................................... 15
Daisy-Chain Operation ............................................................. 15
Terminal Voltage Operation Range ......................................... 16
Power-Up Sequence ................................................................... 16
Rev. C | Page 2 of 28
Applications..................................................................................... 23
Outline Dimensions ....................................................................... 27
5/04—Rev. 0 to Rev. A
Updated formatting............................................................ Universal
Edits to Features, General Description, and Block Diagram.......1
Changes to Specifications.................................................................3
Replaced Timing Diagrams..............................................................6
Changes to Pin Function Descriptions...........................................8
Changes to Typical Performance Characteristics..........................9
Changes to Test Circuits .................................................................13
Edits to Theory of Operation.........................................................14
Edits to Applications .......................................................................23
Updated Outline Dimensions........................................................27
12/01—Revision 0: Initial Version
Latched Digital Outputs ............................................................ 16
Advanced Control Modes ......................................................... 18
RDAC Structure.......................................................................... 19
Programming the Variable Resistor......................................... 19
Programming the Potentiometer Divider............................... 20
Programming Examples ............................................................ 21
Flash/EEMEM Reliability.......................................................... 22
Bipolar Operation from Dual Supplies.................................... 23
High Voltage Operation ............................................................ 23
Bipolar Programmable Gain Amplifier................................... 23
10-Bit Bipolar DAC.................................................................... 23
10-Bit Unipolar DAC ................................................................. 24
Programmable Voltage Source with Boosted Output ........... 24
Programmable Current Source ................................................ 24
Programmable Bidirectional Current Source......................... 25
Resistance Scaling ...................................................................... 25
RDAC Circuit Simulation Model............................................. 26
Ordering Guide .......................................................................... 27