Datasheet

AD5110/AD5112/AD5114 Data Sheet
Rev. B | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Characteristics—AD5110 .......................................... 3
Electrical Characteristics—AD5112 .......................................... 5
Electrical Characteristics—AD5114 .......................................... 7
Interface Timing Specifications .................................................. 9
Shift Register and Timing Diagram ......................................... 10
Absolute Maximum Ratings .......................................................... 11
Thermal Resistance .................................................................... 11
ESD Caution ................................................................................ 11
Pin Configuration and Function Descriptions ........................... 12
Typical Performance Characteristics ........................................... 13
Test Circuits ..................................................................................... 18
Theory of Operation ...................................................................... 19
RDAC Register and EEPROM .................................................. 19
I
2
C Serial Data Interface ............................................................ 19
Input Shift Register .................................................................... 20
Write Operation.......................................................................... 21
EEPROM Write Acknowlegde Polling .................................... 23
Read Operation........................................................................... 23
Reset ............................................................................................. 23
Shutdown Mode ......................................................................... 23
RDAC Architecture .................................................................... 24
Programming the Variable Resistor ......................................... 24
Programming the Potentiometer Divider ............................... 25
Terminal Voltage Operating Range ......................................... 26
Power-Up Sequence ................................................................... 26
Layout and Power Supply Biasing ............................................ 26
Outline Dimensions ....................................................................... 27
Ordering Guide .......................................................................... 27
REVISION HISTORY
11/12—Rev. A to Rev. B
Changed Low Power Consumption from 2.5 mA to 2.5 µA....... 1
Changed
I
DD
Unit from mA to µA, Table 2 .................................... 4
Changed
I
DD
Unit from mA to µA, Table 3 .................................... 6
Changed
I
DD
Unit from mA to µA, Table 4 .................................... 8
Changes to Figure 45 ...................................................................... 23
4/12—Rev. 0 to Rev. A
Changes to Features Section............................................................ 1
Changes to Positive Supply Current, Table 2 ................................ 4
Changes to Positive Supply Current, Table 3 ................................ 6
Changes to Positive Supply Current, Table 4 ................................ 8
Updated Outline Dimensions ....................................................... 27
10/11—Revision 0: Initial Version