ADAQ7980 datasheet(2/45 Pages) AD

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Data Sheet

ADAQ4381-4

TABLE OF CONTENTS

analog.com

Rev. 0 | 2 of 45

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

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

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

Typical Application Diagram.................................. 3

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

Timing Specifications......................................... 8

Absolute Maximum Ratings................................. 11

Thermal Resistance..........................................11

Electrostatic Discharge Ratings........................11

ESD Caution.....................................................11

Pin Configurations and Function Descriptions.....12

Typical Performance Characteristics................... 14

Terminology......................................................... 20

Theory of Operation.............................................22

Circuit Information............................................ 22

Transfer Function............................................. 23

Applications Information...................................... 24

Typical Connection Diagrams...........................24

ADC Driver....................................................... 28

Internal Reference............................................29

Internal LDO.....................................................30

Power Supply and Decoupling......................... 30

ADC Modes of Operation.................................... 31

Oversampling................................................... 31

Resolution Boost.............................................. 33

Alert..................................................................33

Power Modes................................................... 33

Software Reset.................................................34

Diagnostic Self-Test..........................................34

Interface...............................................................35

Reading Conversion Results............................35

Low Latency Readback....................................36

Reading from Device Registers........................36

Writing to Device Registers.............................. 36

CRC..................................................................37

Registers............................................................. 39

Addressing Registers....................................... 39

Configuration1 Register ...................................40

Configuration2 Register....................................41

Alert Indication Register................................... 42

Alert Low Threshold Register........................... 43

Alert High Threshold Register.......................... 43

Layout Guidelines................................................44

Outline Dimensions............................................. 45

Ordering Guide.................................................45

Evaluation Boards............................................ 45

REVISION HISTORY

10/2024—Revision 0: Initial Version

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