MLX90821

Relative Pressure Sensor IC

Page 3 of 40

REV 004 – 4 MAR 2021

3901090821

Contents

Features and Benefits .......................................................................................................................1

Application Examples........................................................................................................................1

Ordering Information........................................................................................................................1

Functional Diagram...........................................................................................................................2

General Description ..........................................................................................................................2

Glossary of Terms .............................................................................................................................5

Absolute Maximum Ratings ..............................................................................................................5

Pin Definitions and Descriptions........................................................................................................6

General Electrical Specifications........................................................................................................7

Detailed General Description ..........................................................................................................8

Default programmed settings .......................................................................................................10

Default Characteristics DBA-003 ............................................................................................... 13

Default Characteristics DBA-005 ............................................................................................... 13

Default Characteristics DBA-006 ............................................................................................... 14

Default Characteristics DBA-007 ............................................................................................... 14

Default Characteristics DBA-008 ............................................................................................... 15

Default Characteristics DBA-100 ............................................................................................... 16

Filters ...........................................................................................................................................17

PFLT........................................................................................................................................... 17

SSF............................................................................................................................................. 17

Analog Front End ..........................................................................................................................18

ADC ..............................................................................................................................................20

Digital ...........................................................................................................................................20

NTC Temperature Linearization.....................................................................................................21

SENT Configuration.......................................................................................................................23

Fast Channel Configuration....................................................................................................... 23

Slow Channel Configuration...................................................................................................... 23

Wrong Connections Overview Analog Output ...............................................................................28

Wrong Connections Overview SENT Output ..................................................................................29

Diagnostics ...................................................................................................................................30

Input Diagnostics....................................................................................................................... 30