Datasheet

AD5689/AD5687 Data Sheet
Rev. 0 | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
AC Characteristics ........................................................................ 4
Timing Characteristics ................................................................ 5
Daisy-Chain and Readback Timing Characteristics................ 6
Absolute Maximum Ratings ............................................................ 8
ESD Caution .................................................................................. 8
Pin Configurations and Function Descriptions ........................... 9
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 15
Theory of Operation ...................................................................... 17
Digital-to-Analog Converters (DACs) .................................... 17
Transfer Function ....................................................................... 17
DAC Architecture ....................................................................... 17
Serial Interface ............................................................................ 18
Standalone Operation ................................................................ 19
Write and Update Commands .................................................. 19
Daisy-Chain Operation ............................................................. 19
Readback Operation .................................................................. 20
Power-Down Operation ............................................................ 20
Load DAC (Hardware
LDAC
Pin) ........................................... 21
LDAC
Mask Register ................................................................. 21
Hardware Reset (
RESET
) .......................................................... 22
Reset Select Pin (RSTSEL) ........................................................ 22
Applications Information .............................................................. 23
Microprocessor Interfacing ....................................................... 23
AD5689/AD5687 to ADSP-BF531 Interface ........................... 23
AD5689/AD5687 to SPORT Interface ...................................... 23
Layout Guidelines....................................................................... 23
Galvanically Isolated Interface ................................................. 23
Outline Dimensions ....................................................................... 24
Ordering Guide .......................................................................... 24
REVISION HISTORY
2/13—Revision 0: Initial Version