AD5672R/AD5676R

Data Sheet

Rev. B | Page 2 of 34

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description......................................................................... 1

Product Highlights ........................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

AD5672R Specifications.............................................................. 3

AD5676R Specifications.............................................................. 5

AC Characteristics........................................................................ 7

Timing Characteristics ................................................................ 8

Daisy-Chain and Readback Timing Characteristics ............... 9

Absolute Maximum Ratings.......................................................... 11

Thermal Resistance .................................................................... 11

ESD Caution................................................................................ 11

Pin ConfigurationS and Function Descriptions......................... 12

Typical Performance Characteristics ........................................... 13

Terminology .................................................................................... 22

Theory of Operation ...................................................................... 24

Digital-to-Analog Converter .................................................... 24

Transfer Function ....................................................................... 24

DAC Architecture....................................................................... 24

Serial Interface ............................................................................ 25

Standalone Operation................................................................ 26

Write and Update Commands.................................................. 26

Daisy-Chain Operation ............................................................. 26

Readback Operation .................................................................. 27

Power-Down Operation ............................................................ 27

Load DAC (Hardware LDAC Pin)........................................... 28

LDAC Mask Register ................................................................. 28

Hardware Reset (RESET) .......................................................... 29

Reset Select Pin (RSTSEL) ........................................................ 29

Amplifier Gain Selection on LFCSP........................................ 29

Internal Reference Setup ........................................................... 29

Solder Heat Reflow..................................................................... 29

Long-Term Temperature Drift ................................................. 29

Thermal Hysteresis .................................................................... 30

Applications Information .............................................................. 31

Power Supply Recommendations............................................. 31

Microprocessor Interfacing....................................................... 31

AD5672R/AD5676R to ADSP-BF531 Interface..................... 31

AD5672R/AD5676R to SPORT Interface............................... 31

Layout Guidelines....................................................................... 31

Galvanically Isolated Interface ................................................. 32

Outline Dimensions....................................................................... 33

Ordering Guide .......................................................................... 34

REVISION HISTORY

11/15—Rev. A to Rev. B

Added 20-Lead LFCSP.......................................................Universal

Change to Features ........................................................................... 1

Changes to Table 7.......................................................................... 11

Added Thermal Resistance Section and Table 8; Renumbered

Sequentially ..................................................................................... 11

Added Figure 7; Renumbered Sequentially ................................ 12

Changes to Table 9.......................................................................... 12

Changes to Transfer Function Section, Internal Reference

Section, and Output Amplifiers Section...................................... 24

Changes to Table 10 ....................................................................... 25

Changes to Write to and Update DAC Channel n (Independent

of LDAC) Section ............................................................................ 26

Changes to Readback Operation Section.................................... 27

Changes to LDAC Mask Register Section and Table 15............ 28

Changes to Reset Select Pin (RSTSEL) Section, Internal

Reference Setup Section, Table 17, and Table 18........................ 29

Added Amplifier Gain Selection on LFCSP Section ................. 29

Updated Outline Dimensions....................................................... 33

Changes to Ordering Guide.......................................................... 34

2/15—Rev. 0 to Rev. A

Added AD5672R Specifications Section ........................................3

Changes to Table 2.............................................................................3

Added AD5676R Specifications Section and Table 3;

Renumbered Sequentially ................................................................5

Change to RESET Pulse Activation Parameter, Table 5 ...............8

Change to Terminology Section................................................... 22

Changes to Transfer Function Section and Output Amplifiers

Section.............................................................................................. 24

Changes to Hardware Reset (RESET) Section............................ 29

Changes to Ordering Guide.......................................................... 33

10/14—Revision 0: Initial Version