Datasheet
AD5686/AD5684 Data Sheet
Rev. A | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
AC Characteristics ........................................................................ 5
Timing Characteristics ................................................................ 6
Daisy-Chain and Readback Timing Characteristics................ 7
Absolute Maximum Ratings ............................................................ 9
ESD Caution .................................................................................. 9
Pin Configurations and Function Descriptions ......................... 10
Typical Performance Characteristics ........................................... 11
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 18
Digital-to-Analog Converter .................................................... 18
Transfer Function ....................................................................... 18
DAC Architecture ....................................................................... 18
Serial Interface ............................................................................ 19
Standalone Operation ................................................................ 20
Write and Update Commands .................................................. 20
Daisy-Chain Operation ............................................................. 20
Readback Operation .................................................................. 21
Power-Down Operation ............................................................ 21
Load DAC (Hardware
LDAC
Pin) ........................................... 22
LDAC
Mask Register ................................................................. 22
Hardware Reset (
RESET
) .......................................................... 23
Reset Select Pin (RSTSEL) ........................................................ 23
Applications Information .............................................................. 24
Microprocessor Interfacing ....................................................... 24
AD5686/AD5684 to ADSP-BF531 Interface .......................... 24
AD5686/AD5684 to SPORT Interface .................................... 24
Layout Guidelines....................................................................... 24
Galvanically Isolated Interface ................................................. 25
Outline Dimensions ....................................................................... 26
Ordering Guide .......................................................................... 27
REVISION HISTORY
6/13—Rev. 0 to Rev. A
Changes to Pin GAIN and Pin RSTSEL Descriptions; Table 7 ...... 10
7/12—Revision 0: Initial Version