AD5384
TABLE OF CONTENTS
General Description......................................................................... 3
Reset Function............................................................................ 25
Asynchronous Clear Function.................................................. 25
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
BUSY
LDAC
Functions...................................................... 25
and
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
Rev. A | Page 2 of 36
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