Datasheet

AD5247 Data Sheet
Rev. F | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
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
I
2
C Interface .................................................................................... 13
Theory of Operation ...................................................................... 14
Programming the Variable Resistor ......................................... 14
Programming the Potentiometer Divider ............................... 15
I
2
C-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
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 18
REVISION HISTORY
5/12—Rev. E to Rev. F
Changes to Features and General Description Sections .............. 1
Changes to I
DD
Parameters, Table 1 ................................................ 3
Changes to I
DD
Parameters, Table 2 ................................................ 4
Changes to Figure 15 ........................................................................ 9
Changes to Figure 16 ...................................................................... 10
Removed Evaluation Board Section ............................................. 17
Changes to Ordering Guide .......................................................... 18
1/11—Rev. D to Rev. E
Change to Table 1, Added Output Logic Low .............................. 3
Change to Table 2, Added Output Logic Low .............................. 4
3/10—Rev. C to Rev. D
Changes to Table 9 and Table 10 ................................................... 14
10/09—Rev. B to Rev. C
Changes to Zero-Scale Error (10 kΩ) Parameter, Table 2 ........... 4
Changes to Ordering Guide .......................................................... 18
3/07—Rev. A to Rev. B
Changes to General Description Section ....................................... 1
Added Table 8 ................................................................................. 13
Changes to I
2
C-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