AD5382
TABLE OF CONTENTS
Rev. 0 | Page 2 of 40
General Description.........................................................................3
Specifications.....................................................................................4
AD5382-5 Specifications.............................................................4
AD5382-3 Specifications.............................................................6
AC Characteristics........................................................................7
Timing Characteristics.....................................................................8
SPI, QSPI, MICROWIRE, or DSP Compatible Serial
Interface....................................................................................8
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2
C Serial Interface......................................................................10
Parallel Interface.........................................................................11
Absolute Maximum Ratings..........................................................13
Pin Configuration and Function Descriptions...........................14
Terminology....................................................................................17
Typical Performance Characteristics...........................................18
Functional Description..................................................................21
DAC Architecture—General.....................................................21
Data Decoding............................................................................21
On-Chip Special Function Registers (SFR) ............................22
SFR Commands..........................................................................22
Hardware Functions.......................................................................25
Reset Function............................................................................25
Asynchronous Clear Function.................................................. 25
BUSY and LDAC Functions...................................................... 25
FIFO Operation in Parallel Mode............................................ 25
Power-On Reset.......................................................................... 25
Power-Down............................................................................... 25
AD5382 Interfaces.......................................................................... 26
DSP, SPI, Microwire Compatible Serial Interfaces................. 26
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2
C Serial Interface ..................................................................... 28
Parallel Interface......................................................................... 30
Microprocessor Interfacing....................................................... 31
Application Information................................................................ 33
Power Supply Decoupling......................................................... 33
Typical Configuration Circuit.................................................. 33
AD5382 Monitor Function....................................................... 34
Toggle Mode Function............................................................... 34
Thermal Monitor Function....................................................... 35
AD5382 in a MEMS Based Optical Switch............................. 35
Optical Attenuators.................................................................... 36
Outline Dimensions....................................................................... 37
Ordering Guide .......................................................................... 37
REVISION HISTORY
5/04—Revision 0: Initial Version