AD5422

Preliminary Technical Data

Rev. PrE | Page 2 of 37

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

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

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

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

Typical Performance Characteristics Voltage output............... 13

Typical Performance Characteristics current output ............... 17

Typical Performance Characteristics general ............................ 20

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

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

Architecture................................................................................. 24

Serial Interface ............................................................................ 24

Default configuration................................................................. 28

Transfer Function ....................................................................... 28

Data Register ............................................................................... 29

Control Register.......................................................................... 29

RESET register ............................................................................ 29

Status register .............................................................................. 30

Features ............................................................................................ 31

fault alert...................................................................................... 31

voltage output short circuit protection.................................... 31

Asynchronous Clear (CLEAR) ................................................. 31

Internal Reference ...................................................................... 31

External current setting resistor ............................................... 31

Voltage ouTput over-range........................................................ 31

Digital Power Supply.................................................................. 31

External boost function............................................................. 31

digital Slew rate control ............................................................. 32

Applications Information .............................................................. 33

driving inductive loads .............................................................. 33

Transient voltage protection ..................................................... 33

Layout Guidelines....................................................................... 33

Galvanically Isolated Interface ................................................. 33

Microprocessor Interfacing....................................................... 33

Thermal and supply considerations......................................... 34

Outline Dimensions ....................................................................... 35

Ordering Guide .......................................................................... 35

REVISION HISTORY

PrE – Preliminary Version, November 22, 2007