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
2
........................................................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
2
..................................................................... 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