AD5420

Preliminary Technical Data

Rev. PrD | Page 2 of 29

TABLE OF CONTENTS

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

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

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

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

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

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

AC Performance Characteristics ................................................ 6

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

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

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

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

Typical Performance Characteristics ........................................... 12

Terminology .................................................................................... 17

Theory of Operation ...................................................................... 18

Architecture................................................................................. 18

Serial Interface ............................................................................ 18

Default configuration................................................................. 21

Transfer Function ....................................................................... 21

Data Register ............................................................................... 21

Control Register.......................................................................... 21

RESET register ............................................................................ 22

Status register .............................................................................. 22

Features ............................................................................................ 23

fault alert...................................................................................... 23

Asynchronous Clear (CLEAR) ................................................. 23

Internal Reference ...................................................................... 23

External current setting resistor ............................................... 23

Digital Power Supply.................................................................. 23

External boost function............................................................. 23

digital Slew rate control ............................................................. 24

Applications Information .............................................................. 25

driving inductive loads .............................................................. 25

Transient voltage protection ..................................................... 25

Layout Guidelines....................................................................... 25

Galvanically Isolated Interface ................................................. 25

Microprocessor Interfacing....................................................... 25

Thermal and supply considerations......................................... 26

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

Ordering Guide .......................................................................... 27

REVISION HISTORY

PrD – Preliminary Version.