AD5620/AD5640/AD5660
TABLE OF CONTENTS
Features .............................................................................................. 1
Output Amplifier........................................................................ 17
Serial Interface............................................................................ 17
Input Shift Register .................................................................... 18
Applications....................................................................................... 1
Product Highlights ........................................................................... 1
Related Device................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AD5620/AD5640/AD5660-2-3 .................................................. 3
AD5620/AD5640/AD5660-1...................................................... 5
Timing Characteristics ................................................................ 7
Absolute Maximum Ratings............................................................ 8
ESD Caution.................................................................................. 8
Pin Configurations and Function Descriptions ........................... 9
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
D/A Section................................................................................. 17
Resistor String............................................................................. 17
Internal Reference ...................................................................... 17
Interrupt .......................................................................... 18
SYNC
Power-On Reset.......................................................................... 19
Power-Down Modes .................................................................. 19
Microprocessor Interfacing....................................................... 19
Applications..................................................................................... 21
Using an REF19x as a Power Supply for the
AD5620/AD5640/AD5660 ....................................................... 21
Bipolar Operation Using the AD5660..................................... 21
Using the AD5660 as an Isolated, Programmable,
4 to 20 mA Process Controller ................................................. 21
Using the AD5620/AD5640/AD5660
with a Galvanically Isolated Interface...................................... 22
Power Supply Bypassing and Grounding................................ 22
Outline Dimensions....................................................................... 23
AD5620 Ordering Guide........................................................... 23
AD5640 Ordering Guide........................................................... 24
AD5660 Ordering Guide........................................................... 24
REVISION HISTORY
9/05—Rev. 0 to Rev. A
Changes to Specifications................................................................ 5
Changes to Outline Dimensions................................................... 23
7/05—Revision 0: Initial Version
Rev. A | Page 2 of 24