AD4692BCPZ datasheet(2/81 Pages) AD

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Data Sheet

AD4691/AD4692

TABLE OF CONTENTS

analog.com

Rev. 0 | 2 of 81

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

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

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

Functional Block Diagram......................................3

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

Timing Specifications......................................... 7

Timing Diagrams................................................ 8

Absolute Maximum Ratings...................................9

Thermal Resistance........................................... 9

Electrostatic Discharge (ESD) Ratings...............9

ESD Caution.......................................................9

Pin Configuration and Function Descriptions...... 10

Typical Performance Characteristics................... 13

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

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

Overview.......................................................... 22

Converter Operation.........................................22

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

Easy Drive Features.........................................23

Analog Inputs................................................... 24

Analog Input Precharge....................................25

Input Overvoltage Protection Clamps...............26

Voltage Reference Input...................................26

Power Supplies................................................ 27

Channel Sequencer..........................................28

Averaging Filters.............................................. 31

Internal Oscillator............................................. 33

Temperature Sensor.........................................33

General Purpose Pin Functions....................... 34

Modes of Operation............................................. 35

CNV Clock Mode..............................................36

CNV Burst Mode.............................................. 37

SPI Burst Mode................................................ 38

Autonomous Mode........................................... 39

Manual Mode....................................................40

Digital Interface....................................................42

Device Reset....................................................45

State Reset.......................................................46

Applications Information...................................... 47

Interleaved Channel Sequencing..................... 48

Effective Channel Sample Rate....................... 48

Priority Sequence Scheme...............................49

Selecting RC Kickback Filter Components.......51

Masking Channels to Avoid Lockout

Conditions...................................................... 51

Bulk Reading ADC Data Registers...................52

Configuration Flowcharts..................................53

Layout Guidelines.............................................57

Evaluating the AD4691/AD4692

Performance...................................................57

Outline Dimensions............................................. 80

Ordering Guide ................................................81

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