MAX40109

Precision Signal Conditioning AFE for Pressure

Sensor Applications

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Analog Devices | 2

TABLE OF CONTENTS

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

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

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

Simplified Block Diagram ....................................................................................................................................................5

Absolute Maximum Ratings ...............................................................................................................................................6

Package Information ...........................................................................................................................................................6

Electrical Characteristics.....................................................................................................................................................7

Typical Operating Characteristics .....................................................................................................................................13

Pin Configurations.............................................................................................................................................................17

Pin Descriptions ................................................................................................................................................................17

Detailed Description..........................................................................................................................................................18

Register Function ..........................................................................................................................................................18

Configuration Register ...............................................................................................................................................20

PGA Input Mux...........................................................................................................................................................20

ALERT Mode .............................................................................................................................................................20

Pressure Digital Output cases: ..................................................................................................................................21

Temp Current.............................................................................................................................................................21

Shutdown...................................................................................................................................................................22

Current Source Reference Resistor...........................................................................................................................22

Reference ..................................................................................................................................................................22

Digital Filter................................................................................................................................................................22

Pressure Cal Bypass .................................................................................................................................................23

Temp Cal Bypass.......................................................................................................................................................23

MTP_EN ....................................................................................................................................................................23

Status Register ..........................................................................................................................................................23

PGA Pressure Gain ...................................................................................................................................................24

Current Source...........................................................................................................................................................24

Uncalibrated Pressure ...............................................................................................................................................25

Uncalibrated Temperature .........................................................................................................................................25

ADC Sample Rate......................................................................................................................................................25

Interrupt Enable .........................................................................................................................................................26

Bridge Drive ...............................................................................................................................................................26

PGA Temperature Gain .............................................................................................................................................26

Calibrated Pressure ...................................................................................................................................................27

Calibrated Temperature.............................................................................................................................................27

Temp Mode................................................................................................................................................................27

Sensor Offset Cal Config ...........................................................................................................................................28