Datasheet

AD5380 Data Sheet
Rev. C | Page 2 of 40
TABLE OF CONTENTS
General Description ......................................................................... 3
Specifications ..................................................................................... 4
AD5380-5 Specifications ............................................................. 4
AD5380-3 Specifications ............................................................. 6
AC Characteristics ........................................................................ 7
Timing Characteristics ..................................................................... 8
Serial Interface .............................................................................. 8
I
2
C Serial Interface ...................................................................... 10
Parallel Interface ......................................................................... 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
Asynchronous Clear Function .................................................. 25
BUSY
and
LDAC
Functions...................................................... 25
FIFO Operation in Parallel Mode ............................................ 25
Power-On Reset .......................................................................... 25
Power-Down ............................................................................... 25
AD5380 Interfaces .......................................................................... 26
DSP-, SPI-, Microwire-Compatible Serial Interfaces ............ 26
I
2
C Serial Interface ..................................................................... 28
Parallel Interface ......................................................................... 30
Microprocessor Interfacing ....................................................... 31
Application Information ................................................................ 33
Power Supply Decoupling ......................................................... 33
Typical Configuration Circuit .................................................. 33
AD5380 Monitor Function ....................................................... 34
Toggle Mode Function ............................................................... 34
Thermal Monitor Function ....................................................... 35
AD5380 in a MEMS Based Optical Switch ............................. 35
Optical Attenuators .................................................................... 36
Utilizing the AD5380 FIFO ...................................................... 37
Outline Dimensions ....................................................................... 38
Ordering Guide .......................................................................... 38
REVISION HISTORY
9/12—Rev. B to Rev. C
Changes to Product Title ........................................................... 1
Changes to General Description Section and Table 1 ................ 3
Deleted Table 2; Renumbered Sequentially .............................. 3
6/12—Rev. A to Rev. B
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 t
14
and t
19
Parameters, Table 6 ..................................... 8
Changes to Table 9 .......................................................................... 13
Changes to Figure 10, Figure 11, and Figure 14 ......................... 18
Changes to Figure 16, Figure 17, Figure 18, Figure 20 .............. 19
Update Outline Dimensions and Changes to Ordering Guide ...... 38
6/05—Rev. 0 to Rev. A
Changes to Specifications ................................................................. 3
Changes to Terminology ............................................................... 17
Changes to Table 18 ....................................................................... 24
Changes to Figure 43 ...................................................................... 35
5/04—Revision 0: Initial Version