AD5623R/AD5643R/AD5663R

Data Sheet

Rev. G | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

Revision History ............................................................................... 3

 

Specifications..................................................................................... 4

 

AD5623R-5/AD5643R-5/AD5663R-5 ....................................... 4

 

AD5623R-3/AD5643R-3/AD5663R-3 ....................................... 6

 

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

 

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

 

Timing Diagram ........................................................................... 8

 

Absolute Maximum Ratings............................................................ 9

 

ESD Caution.................................................................................. 9

 

Pin Configuration and Function Descriptions........................... 10

 

Typical Performance Characteristics ........................................... 11

 

Terminology .................................................................................... 19

 

Theory of Operation ...................................................................... 21

 

Digital-to-Analog Section ......................................................... 21

 

Resistor String............................................................................. 21

 

Output Amplifier........................................................................ 21

 

Internal Reference ...................................................................... 21

 

External Reference ..................................................................... 21

 

Serial Interface ............................................................................ 21

 

Input Shift Register .................................................................... 22

 

SYNC Interrupt .......................................................................... 22

 

Power-On Reset.......................................................................... 23

 

Software Reset............................................................................. 23

 

Power-Down Modes .................................................................. 23

 

LDAC Function .......................................................................... 24

 

Internal Reference Setup ........................................................... 25

 

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

 

Applications Information .............................................................. 27

 

Using a Reference as a Power Supply....................................... 27

 

Bipolar Operation Using the AD5663R................................... 27

 

Using the AD5663R with a Galvanically Isolated Interface .. 27

 

Power Supply Bypassing and Grounding................................ 28

 

Outline Dimensions....................................................................... 29

 

Ordering Guide .......................................................................... 30