EVAL-AD5381EB【PDF 2/36 页】40-Channel, 3 V/5 V, Single-Supply, 12-B

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Sheet目录362800

1页 [2页]3页 4页 5页 6页

AD5381

TABLE OF CONTENTS

General Description.........................................................................3

Rev. A | Page 2 of 36

Specifications.....................................................................................4

AD5381-5 Specifications.............................................................4

AD5381-3 Specifications.............................................................6

AC Characteristics........................................................................7

Timing Characteristics.....................................................................8

Serial Interface Timing................................................................8

I C Serial Interface Timing

........................................................10

Parallel Interface Timing...........................................................11

Absolute Maximum Ratings..........................................................13

Pin Configuration and Function Descriptions...........................14

Terminology....................................................................................17

Typical Performance Characteristics...........................................18

Functional Description..................................................................21

DAC Architecture—General.....................................................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

AD5381 Interfaces.......................................................................... 26

DSP, SPI, MICROWIRE Compatible Serial Interfaces.......... 26

I C Serial Interface

..................................................................... 28

Parallel Interface......................................................................... 30

Microprocessor Interfacing....................................................... 31

Application Information................................................................ 33

Power Supply Decoupling......................................................... 33

Typical Configuration Circuit.................................................. 33

AD5381 Monitor Function....................................................... 34

Toggle Mode Function............................................................... 34

Thermal Monitor Function....................................................... 34

Optical Attenuators.................................................................... 35

Utilizing the AD5381 FIFO....................................................... 35

Outline Dimensions....................................................................... 36

Ordering Guide .......................................................................... 36

REVISION HISTORY

6/04—Data Sheet Changed from Rev. 0 to Rev. A

Changes to Ordering Guide...........................................................36

5/04—Revision 0: Initial Version

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