Datasheet

AD5686R/AD5685R/AD5684R Data Sheet
Rev. B | Page 2 of 32
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 Configuration and Function Descriptions ........................... 10
Typical Performance Characteristics ........................................... 11
Terminology .................................................................................... 18
Theory of Operation ...................................................................... 20
Digital-to-Analog Converter .................................................... 20
Transfer Function ....................................................................... 20
DAC Architecture ....................................................................... 20
Serial Interface ............................................................................ 21
Standalone Operation ................................................................ 22
Write and Update Commands .................................................. 22
Daisy-Chain Operation ............................................................. 23
Readback Operation .................................................................. 23
Power-Down Operation ............................................................ 24
Load DAC (Hardware
LDAC
Pin) ........................................... 25
LDAC
Mask Register ................................................................. 25
Hardware Reset (
RESET
) .......................................................... 26
Reset Select Pin (RSTSEL) ........................................................ 26
Internal Reference Setup ........................................................... 26
Solder Heat Reflow ..................................................................... 26
Long-Term Temperature Drift ................................................. 26
Thermal Hysteresis .................................................................... 27
Applications Information .............................................................. 28
Microprocessor Interfacing ....................................................... 28
AD5686R/AD5685R/AD5684R to ADSP-BF531 Interface .. 28
AD5686R/AD5685R/AD5684R to SPORT Interface ............ 28
Layout Guidelines....................................................................... 28
Galvanically Isolated Interface ................................................. 29
Outline Dimensions ....................................................................... 30
Ordering Guide .......................................................................... 31
REVISION HISTORY
6/13—Rev. A to Rev. B
Changes to Pin GAIN and Pin RSTSEL Descriptions; Table 6 ... 10
9/12—Rev. 0 to Rev. A
Changes to Table 1 ............................................................................ 1
Changes to Figure 13 ...................................................................... 11
Changes to Figure 36 ...................................................................... 15
4/12—Revision 0: Initial Version