AD5380_15 datasheet(2/40 Pages) AD

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AD5380

Data Sheet

Rev. D | Page 2 of 40

TABLE OF CONTENTS

Features .............................................................................................. 1

Integrated Functions ........................................................................ 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 3

General Description ......................................................................... 4

Specifications..................................................................................... 5

AD5380-5 Specifications ............................................................. 5

AD5380-3 Specifications ............................................................. 7

AC Characteristics........................................................................ 8

Timing Characteristics..................................................................... 9

Serial Interface .............................................................................. 9

I2C Serial Interface...................................................................... 11

Parallel Interface ......................................................................... 12

Absolute Maximum Ratings.......................................................... 14

ESD Caution................................................................................ 14

Pin Configuration and Function Descriptions........................... 15

Terminology .................................................................................... 18

Typical Performance Characteristics ........................................... 19

Functional Description .................................................................. 22

DAC Architecture—General..................................................... 22

Data Decoding ............................................................................ 22

On-Chip Special Function Registers (SFR) ............................ 23

SFR Commands .......................................................................... 23

Hardware Functions....................................................................... 26

RESET Function ......................................................................... 26

Asynchronous Clear Function.................................................. 26

BUSY and LDAC Functions...................................................... 26

FIFO Operation in Parallel Mode ............................................ 26

Power-On Reset.......................................................................... 26

Power-Down ............................................................................... 26

AD5380 Interfaces.......................................................................... 27

DSP-, SPI-, Microwire-Compatible Serial Interfaces ............ 27

I2C Serial Interface ..................................................................... 29

Parallel Interface......................................................................... 31

Microprocessor Interfacing....................................................... 32

Applications Information .............................................................. 34

Power Supply Decoupling ......................................................... 34

Power Supply Sequencing ......................................................... 34

Typical Configuration Circuit .................................................. 35

AD5380 Monitor Function ....................................................... 36

Toggle Mode Function............................................................... 36

Thermal Monitor Function....................................................... 37

AD5380 in a MEMS Based Optical Switch............................. 37

Optical Attenuators.................................................................... 38

Utilizing the AD5380 FIFO ...................................................... 39

Outline Dimensions ....................................................................... 40

Ordering Guide .......................................................................... 40

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