EVAL-AD5382EB【PDF 2/40 页】32-Channel, 3 V/5 V, Single-Supply, 14-B

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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

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

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

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