AD5689R/AD5687R

Data Sheet

Rev. B | 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 .................................................................................... 17

 

Theory of Operation ...................................................................... 19

 

Digital-to-Analog Converters................................................... 19

 

Transfer Function ....................................................................... 19

 

DAC Architecture....................................................................... 19

 

Serial Interface ............................................................................ 20

 

Standalone Operation ................................................................ 21

 

Write and Update Commands.................................................. 21

 

Daisy-Chain Operation ............................................................. 21

 

Readback Operation .................................................................. 22

 

Power-Down Operation ............................................................ 22

 

Load DAC (Hardware LDAC Pin) ........................................... 23

 

LDAC Mask Register ................................................................. 23

 

Hardware Reset (RESET) .......................................................... 24 

Reset Select Pin (RSTSEL) ........................................................ 24

 

Internal Reference Setup ........................................................... 24

 

Solder Heat Reflow..................................................................... 24

 

Long-Term Temperature Drift ................................................. 24

 

Thermal Hysteresis .................................................................... 25

 

Applications Information .............................................................. 26

 

Microprocessor Interfacing....................................................... 26

 

AD5689R/AD5687R to ADSP-BF531 Interface ...................... 26

 

AD5689R/AD5687R to SPORT Interface ................................ 26

 

Layout Guidelines....................................................................... 26

 

Galvanically Isolated Interface ................................................. 26

 

Outline Dimensions ....................................................................... 27

 

Ordering Guide .......................................................................... 28

 

REVISION HISTORY

3/2017—Rev. A to Rev. B

Changes to Features and Table 1 .................................................... 1

10% ..................................................................................................... 5

Changes to Table 4 and Figure 2..................................................... 6

Changes to Table 5 and Figure 4..................................................... 7

Changes to Figure 5.......................................................................... 8

Changes to Table 6............................................................................ 9

Changes to Table 7.......................................................................... 10

Changes to Figure 12...................................................................... 11

Changes to Figure 19...................................................................... 12

Changes to Figure 20 to Figure 23 and Figure 25....................... 13

Changes to Figure 26, Figure 27, Figure 29, and Figure 30....... 14

Changes to Figure 33, Figure 36, and Figure 37 ......................... 15

Change to Table 9 ........................................................................... 20

Change to Readback Operation Section ..................................... 22

Change to Table 14 ......................................................................... 23

Changes to Hardware Reset Section and Reset Select Pin

(RSTSEL) Section ........................................................................... 24

Added Long-Term Temperature Drift Section and Figure 49;

Renumbered Sequentially ............................................................. 24

5/2014—Rev. 0 to Rev. A

Deleted Long-Term Stability/Drift Parameter, Table 1 ................4

Deleted Figure 11; Renumbered Sequentially ............................ 11

Deleted Long-Term Temperature Drift Section......................... 24

2/2013—Revision 0: Initial Version