AD4680/AD4681

Data Sheet

Rev. 0 | Page 2 of 29

TABLE OF CONTENTS

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

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

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

Companion Products....................................................................... 1

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

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

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

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

Absolute Maximum Ratings ........................................................... 7

Thermal Resistance ...................................................................... 7

Electrostatic Discharge (ESD) Ratings ...................................... 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions ............................ 8

Typical Performance Characteristics............................................. 9

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 ....................................................................... 18

Oversampling ............................................................................. 18

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

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

Power Modes .............................................................................. 20

Internal and 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........................................................................................... 25

Addressing Registers.................................................................. 25

CONFIGURATION1 Register................................................. 26

CONFIGURATION2 Register................................................. 27

ALERT Register.......................................................................... 27

ALERT_LOW_THRESHOLD Register.................................. 28

ALERT_HIGH_THRESHOLD Register ................................ 28

Outline Dimensions....................................................................... 29

Ordering Guide .......................................................................... 29

REVISION HISTORY

10/2020—Revision 0: Initial Version