AD5384

Rev. A | Page 2 of 36

TABLE OF CONTENTS

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

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

AD5384-5 Specifications ............................................................. 4

AC Characteristics........................................................................ 6

AD5384-3 Specifications ............................................................. 7

AC Characteristics........................................................................ 9

Timing Characteristics................................................................... 10

Serial Interface ............................................................................ 10

I2C Serial Interface...................................................................... 12

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

Power-On Reset.......................................................................... 25

Power-Down ............................................................................... 25

Interfaces.......................................................................................... 26

DSP-, SPI-, Microwire-Compatible Serial Interfaces ............ 26

I2C Serial Interface ..................................................................... 28

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

Application Information................................................................ 32

Power Supply Decoupling ......................................................... 32

Monitor Function....................................................................... 32

Toggle Mode Function............................................................... 32

Thermal Monitor Function....................................................... 33

AD5384 in a MEMS-Based Optical Switch ............................ 33

Optical Attenuators.................................................................... 34

Outline Dimensions ....................................................................... 35

Ordering Guide .......................................................................... 35

REVISION HISTORY

10/04—Changed from Rev. 0 to Rev. A

Changes to Table 19........................................................................ 24

Changes to Ordering Guide .......................................................... 35

7/04—Revision 0: Initial Version