AD7381-4

Data Sheet

Rev. 0 | Page 2 of 31

TABLE OF CONTENTS

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

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

Functional Block Diagram .............................................................. 1

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

Product Highlights........................................................................... 1

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

Specifications .................................................................................... 3

Timing Specifications .................................................................. 5

Absolute Maximum Ratings ........................................................... 8

Thermal Resistance ...................................................................... 8

Electrostatic Discharge (ESD) Ratings...................................... 8

ESD Caution.................................................................................. 8

Pin Configuration and Function Descriptions ............................ 9

Typical Performance Characteristics........................................... 10

Terminology.................................................................................... 13

Theory of Operation ...................................................................... 14

Circuit Information ................................................................... 14

Converter Operation.................................................................. 14

Analog Input Structure.............................................................. 14

ADC Transfer Function ............................................................ 15

Applications Information.............................................................. 16

Power Supply .............................................................................. 16

Modes of Operation ....................................................................... 17

Oversampling ............................................................................. 17

Resolution Boost ........................................................................ 19

Alert.............................................................................................. 19

Power Modes .............................................................................. 19

Internal/External Reference...................................................... 20

Software Reset............................................................................. 20

Diagnostic Self Test.................................................................... 20

Interface........................................................................................... 21

Reading Conversion Results..................................................... 21

Low Latency Readback.............................................................. 22

Reading from Device Registers ................................................ 23

Writing to Device Registers...................................................... 23

CRC.............................................................................................. 23

Registers........................................................................................... 26

Addressing Registers.................................................................. 26

Configuration 1 Register........................................................... 27

Configuration 2 Register........................................................... 28

Alert Indication Register........................................................... 28

Alert Low Threshold Register .................................................. 30

Alert High Threshold Register ................................................. 30

Outline Dimensions....................................................................... 31

Ordering Guide .......................................................................... 31

REVISION HISTORY

1/2022—Revision 0: Initial Version