AD4112BCPZ datasheet(2/58 Pages) AD

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AD4112

Data Sheet

Rev. A | Page 2 of 58

TABLE OF CONTENTS

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

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

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

Revision History ............................................................................... 3

Functional Block Diagram .............................................................. 4

Specifications..................................................................................... 5

Timing Characteristics ................................................................ 8

Absolute Maximum Ratings.......................................................... 10

Thermal Resistance .................................................................... 10

ESD Caution................................................................................ 10

Pin Configuration and Function Descriptions........................... 11

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

Noise Performance and Resolution.............................................. 18

Theory of Operation ...................................................................... 20

Power Supplies ............................................................................ 21

Digital Communication............................................................. 21

AD4112 Reset.............................................................................. 22

Configuration Overview ........................................................... 23

Circuit Description......................................................................... 26

Multiplexer .................................................................................. 26

Current Inputs ............................................................................ 27

Voltage Inputs ............................................................................. 27

Data Output Coding .................................................................. 27

AD4112 Reference...................................................................... 27

Buffered Reference Input........................................................... 29

Clock Source ............................................................................... 29

Digital Filter .................................................................................... 30

Sinc5 + Sinc1 Filter..................................................................... 30

Sinc3 Filter................................................................................... 30

Single Cycle Settling................................................................... 31

Enhanced 50 Hz and 60 Hz Rejection Filters ......................... 31

Operating Modes............................................................................ 34

Continuous Conversion Mode ................................................. 34

Continuous Read Mode............................................................. 35

Single Conversion Mode ........................................................... 36

Standby and Power-Down Modes............................................ 37

Calibration................................................................................... 37

Digital Interface .............................................................................. 38

Checksum Protection................................................................. 38

CRC Calculation......................................................................... 39

Integrated Functions ...................................................................... 41

General-Purpose Ouputs .......................................................... 41

Delay ............................................................................................ 41

16-Bit/24-Bit Conversions......................................................... 41

DOUT_RESET ........................................................................... 41

Synchronization.......................................................................... 41

Error Flags................................................................................... 42

DATA_STAT ............................................................................... 42

IOSTRENGTH ........................................................................... 42

Internal Temperature Sensor .................................................... 42

Applications Information .............................................................. 43

IEC61000-4-x and CISPR 11 Robustness ............................... 43

Grounding and Layout .............................................................. 43

Communications Register......................................................... 46

Status Register............................................................................. 47

ADC Mode Register................................................................... 48

Interface Mode Register ............................................................ 49

Data Register............................................................................... 50

GPIO Configuration Register................................................... 51

ID Register................................................................................... 52

Channel Register 0 ..................................................................... 52

Channel Register 1 to Channel Register 15 ............................ 53

Setup Configuration Register 0 ................................................ 54

Setup Configuration Register 1 to Setup Configuration

Filter Configuration Register 0................................................. 55

Filter Configuration Register 1 to Filter Configuration

Offset Register 0 ......................................................................... 56

Offset Register 1 to Offset Register 7....................................... 56

Gain Register 0............................................................................ 57

Gain Register 1 to Gain Register 7........................................... 57

Outline Dimensions....................................................................... 58

Ordering Guide .......................................................................... 58

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