AD5247
TABLE OF CONTENTS
Features .............................................................................................. 1
Theory of Operation ...................................................................... 14
Programming the Variable Resistor......................................... 14
Programming the Potentiometer Divider............................... 15
I2C-Compatible 2-Wire Serial Bus........................................... 15
Level Shifting for Bidirectional Interface................................ 16
ESD Protection ........................................................................... 16
Terminal Voltage Operating Range ......................................... 16
Maximum Operating Current .................................................. 16
Power-Up Sequence ................................................................... 16
Layout and Power Supply Bypassing ....................................... 17
Constant Bias to Retain Resistance Setting............................. 17
Evaluation Board........................................................................ 17
Outline Dimensions....................................................................... 18
Ordering Guide .......................................................................... 18
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics—5 kΩ Version.................................. 3
Electrical Characteristics—10 kΩ, 50 kΩ, and 100 kΩ
Versions.......................................................................................... 4
Timing Characteristics—5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ
Versions.......................................................................................... 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Test Circuits..................................................................................... 12
I2C Interface..................................................................................... 13
REVISION HISTORY
3/07—Rev. A to Rev. B
Changes to General Description Section ...................................... 1
Added Table 8.................................................................................. 13
Changes to I2C-Compatible 2-Wire Serial Bus Section............. 15
Changes to Ordering Guide .......................................................... 18
7/06—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Changes to Absolute Maximum Ratings section ......................... 6
Changes to Ordering Guide .......................................................... 18
9/03—Revision 0: Initial Version
Rev. B | Page 2 of 20