AD5390/AD5391/AD5392
TABLE OF CONTENTS
Rev. A | Page 2 of 44
General Description.........................................................................3
AD5390-5/AD5391-5/AD5392-5 Specifications..........................4
AD5390-5/AD5391-5/AD5392-5 AC Characteristics.................6
AD5390-3/AD5391-3/AD5392-3 Specifications..........................7
AD5390-3/AD5391-3/AD5392-3 AC Characteristics.................9
Timing Characteristics: Serial SPI-, QSPI-, Microwire-, and
DSP-Compatible Interface.............................................................10
Timing Characteristics: I
2
C Serial Interface................................13
Absolute Maximum Ratings..........................................................14
ESD Caution................................................................................14
Pin Configuraton and Function Descriptions............................15
Terminology....................................................................................18
Typical Performance Characteristics...........................................19
Functional Description..................................................................23
DAC Architecture—General.....................................................23
Data Decoding—AD5390/AD5392.........................................24
Data Decoding—AD5391.........................................................24
Interfaces..........................................................................................25
DSP-, SPI-, and MICROWIRE-Compatible Serial Interface 25
I
2
C Serial Interface..........................................................................27
I
2
C Data Transfer........................................................................27
START and STOP Conditions..................................................27
Repeated START Condition......................................................27
Acknowledge Bit (ACK)............................................................27
I
2
C Write Operation....................................................................... 28
4-Byte Mode................................................................................ 28
3-Byte Mode................................................................................ 29
2-Byte Mode................................................................................ 30
AD539x On-Chip Special Function Registers........................ 31
Control Register Write............................................................... 33
Hardware Functions....................................................................... 35
Reset Function............................................................................ 35
Asynchronous Clear Function.................................................. 35
BUSY and LDAC Functions...................................................... 35
Power-On Reset.......................................................................... 35
Power-Down............................................................................... 35
Microprocessor Interfacing....................................................... 35
Application Information................................................................ 37
Power Supply Decoupling......................................................... 37
Typical Configuration Circuit.................................................. 37
AD539x Monitor Function....................................................... 38
Toggle Mode Function............................................................... 38
Thermal Monitor Function....................................................... 38
Outline Dimensions....................................................................... 40
Ordering Guide .......................................................................... 41
REVISION HISTORY
10/04: Data Sheet Changed from Rev. 0 to Rev. A
Changes to Features.......................................................................... 1
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 4
Changes to Table 3............................................................................ 6
Changes to Table 4............................................................................ 7
Changes to Figure 36......................................................................35
Changes to Figure 37...................................................................... 36
Changes to Figure 38...................................................................... 36
Changes to Ordering Guide.......................................................... 41
4/04—Revision 0: Initial Version