AD4020

Data Sheet

Rev. A | Page 2 of 36

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Specifications .................................................................. 6

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

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

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

Pin Configurations and Function Descriptions ........................... 9

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

Terminology .................................................................................... 14

Theory of Operation ...................................................................... 15

Circuit Information.................................................................... 15

Converter Operation.................................................................. 15

Transfer Functions...................................................................... 16

Applications Information .............................................................. 17

Typical Application Diagrams .................................................. 17

Analog Inputs ............................................................................. 19

Driver Amplifier Choice ........................................................... 20

Ease of Drive Features ............................................................... 22

Voltage Reference Input ............................................................ 23

Power Supply............................................................................... 24

Digital Interface.......................................................................... 24

Register Read/Write Functionality........................................... 25

Status Word ................................................................................. 27

CS Mode, 3-Wire Turbo Mode................................................. 28

CS Mode, 3-Wire Without the Busy Indicator....................... 29

CS Mode, 3-Wire with the Busy Indicator.............................. 30

CS Mode, 4-Wire Turbo Mode................................................. 31

CS Mode, 4-Wire Without the Busy Indicator........................... 32

CS Mode, 4-Wire with the Busy Indicator.............................. 33

Daisy-Chain Mode..................................................................... 34

Layout Guidelines....................................................................... 35

Evaluating the AD4020 Performance...................................... 35

Outline Dimensions....................................................................... 36

Ordering Guide .......................................................................... 36

REVISION HISTORY

7/2017— Rev. 0 to Rev. A

Change to Integral Nonlinearity Error (INL) Parameter,

Table 1 ................................................................................................ 3

7/2017—Revision 0: Initial Version