AD5744

Preliminary Technical Data

Rev. PrE | Page 2 of 32

TABLE OF CONTENTS

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

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

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

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

Functional Block Diagram .............................................................. 3

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

AC Performance Characteristic...................................................... 6

Timing Characteristics..................................................................... 7

Absolute Maximum Ratings.......................................................... 10

ESD Caution................................................................................ 10

Pin Configuration and Function Descriptions........................... 11

Terminology .................................................................................... 13

Typical Performance Characteristics ........................................... 15

Theory of Operation ...................................................................... 20

DAC Architecture....................................................................... 20

Reference Buffers........................................................................ 20

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

Simultaneous Updating via LDAC........................................... 21

Transfer Function....................................................................... 22

Asynchronous Clear (CLR)....................................................... 22

Function Register ....................................................................... 23

Data Register............................................................................... 24

Coarse Gain Register ................................................................. 24

Fine Gain Register ...................................................................... 24

AD5744 Features ............................................................................ 25

Analog Output Control ............................................................. 25

Programmable Short-Circuit Protection ................................ 25

Digital I/O Port........................................................................... 25

Local Ground Offset Adjust...................................................... 25

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

Typical Operating Circuit ......................................................... 26

Layout Guidelines........................................................................... 27

Galvanically Isolated Interface ................................................. 27

Microprocessor Interfacing....................................................... 27

Outline Dimensions ....................................................................... 30

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

REVISION HISTORY

3/06—Revision PrE

Removed AD5744R, AD5764, and AD5764R .................Universal

Changes to Ordering Guide .......................................................... 30