AD5381
Data Sheet
TABLE OF CONTENTS
General Description......................................................................... 3
Asynchronous Clear Function.................................................. 25
Specifications..................................................................................... 4
AD5381-5 Specifications............................................................. 4
AD5381-3 Specifications............................................................. 6
AC Characteristics........................................................................ 7
Timing Characteristics..................................................................... 8
Serial Interface Timing ................................................................ 8
I2C Serial Interface Timing........................................................ 10
Parallel Interface Timing........................................................... 11
Absolute Maximum Ratings.......................................................... 13
ESD Caution................................................................................ 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
and
Functions...................................................... 25
LDAC
BUSY
FIFO Operation in Parallel Mode............................................ 25
Power-On Reset.......................................................................... 25
Power-Down ............................................................................... 25
Interfaces.......................................................................................... 26
DSP-, SPI-, MICROWIRE-Compatible Serial Interfaces ..... 26
I2C Serial Interface ..................................................................... 28
Parallel Interface......................................................................... 30
Microprocessor Interfacing....................................................... 31
Application Information................................................................ 33
Power Supply Decoupling ......................................................... 33
Typical Configuration Circuit .................................................. 33
Monitor Function....................................................................... 34
Toggle Mode Function............................................................... 34
Thermal Monitor Function....................................................... 34
Optical Attenuators.................................................................... 35
Utilizing FIFO............................................................................. 35
Outline Dimensions....................................................................... 37
Ordering Guide .......................................................................... 37
REVISION HISTORY
9/12—Rev. C to Rev. D
8/05—Rev. A to Rev. B
Changes to Product Title..................................................................1
Changes to General Description Section and Table 1 ..................3
Deleted Table 2; Renumbered Sequentially ...................................3
Changes to Table 2.............................................................................3
Changes to Specifications Section...................................................4
Changes to Absolute Maximum Ratings Section....................... 13
Changes to Figure 43...................................................................... 35
Changes to Ordering Guide.......................................................... 37
5/12—Rev. B to Rev. C
Changes to Features.......................................................................... 1
Changes to Table 3............................................................................ 4
Changes to Table 4............................................................................ 6
Changes to Output Voltage Settling Time and Slew Rate
Parameters, Table 5........................................................................... 7
Changes to t14, t17, and t19 Parameters, Table 6 .............................. 8
Changes to Table 9.......................................................................... 13
Changes to Figure 10, Figure 11, and Figure 14 ......................... 18
Changes to Figure 16 to Figure 18 and Figure 20....................... 19
Updated Outline Dimensions and Changes to Ordering Guide....37
6/04—Data Sheet Changed from Rev. 0 to Rev. A
Changes to Ordering Guide...........................................................36
5/04—Revision 0: Initial Version
Rev. D | Page 2 of 40
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