MLX10420AA

3-channel air-core gauge driver

with serial interface

3901010420

Page 3 of 25

Device specification

Rev 2

Jun/12

4 Table of contents

1 FUNCTIONAL DIAGRAM.......................................................................................................................... 1

2 GENERAL DESCRIPTION ........................................................................................................................ 1

3 HISTORY.................................................................................................................................................... 2

4 TABLE OF CONTENTS............................................................................................................................. 3

5 TABLE OF FIGURES ................................................................................................................................ 4

6 TABLE OF TABLES .................................................................................................................................. 4

7 GLOSSARY OF TERMS............................................................................................................................ 5

8 MAXIMUM RATINGS................................................................................................................................. 6

9 PAD DEFINITIONS AND DESCRIPTIONS ............................................................................................... 7

10 GENERAL ELECTRICAL SPECIFICATIONS......................................................................................... 9

11 DETAILED BLOCK DIAGRAM DESCRIPTION.................................................................................... 13

11.2.1 Air-core meters 360°................................................................................................................. 13

11.2.2 air-core meter 90°..................................................................................................................... 14

11.4.1 Introduction ............................................................................................................................... 15

11.4.2 Signal description...................................................................................................................... 15

11.4.3 Functional description ............................................................................................................... 16

11.4.4 Communication memory maps ................................................................................................. 17

11.4.5 Register description .................................................................................................................. 17

11.4.5.1 AIRCORE1 .........................................................................................................................................17

11.4.5.2 AIRCORE2 .........................................................................................................................................17

11.4.5.3 AIRCORE3 .........................................................................................................................................18

11.4.5.4 CAL.....................................................................................................................................................18

11.4.5.5 RST.....................................................................................................................................................19

11.4.5.6 TEST...................................................................................................................................................19

11.4.6 Status register ........................................................................................................................... 19

11.6.1 Air-core meter 360°................................................................................................................... 20

11.6.2 Air-core meter 90°..................................................................................................................... 21

12 APPLICATIONS INFORMATION .......................................................................................................... 22

13 STANDARD INFORMATION REGARDING MANUFACTURABILITY OF MELEXIS PRODUCTS

WITH DIFFERENT SOLDERING PROCESSES ........................................................................................ 23

14 ESD PRECAUTIONS............................................................................................................................. 23

15 PACKAGE INFORMATION ................................................................................................................... 24

16 DISCLAIMER ......................................................................................................................................... 25