AD5422 데이터 시트보기 (PDF) - Analog Devices

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AD5422

Single Channel, 12-/16-Bit, Serial Input, Current Source and Voltage Output DACs, HART Connectivity

Analog Devices 

AD5412/AD5422

TABLE OF CONTENTS

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

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

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

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

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

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

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

AC Performance Characteristics .............................................. 10

Timing Characteristics .............................................................. 10

Absolute Maximum Ratings.......................................................... 13

ESD Caution................................................................................ 13

Pin Configurations and Function Descriptions ......................... 14

Typical Performance Characteristics ........................................... 16

General......................................................................................... 16

Voltage Output ............................................................................ 18

Current Output ........................................................................... 23

Terminology .................................................................................... 27

Theory of Operation ...................................................................... 29

Architecture................................................................................. 29

Serial Interface ............................................................................ 30

Power-On State ........................................................................... 31

Data Register ............................................................................... 33

Control Register.......................................................................... 33

Reset Register .............................................................................. 34

Status Register ............................................................................. 34

AD5412/AD5422 Features ............................................................ 35

Data Sheet

Fault Alert.................................................................................... 35

Voltage Output Short Circuit Protection ................................ 35

Voltage Output Overrange ........................................................ 35

Voltage Output Force-Sense ..................................................... 35

Asynchronous Clear (CLEAR) ................................................. 35

Internal Reference ...................................................................... 35

External Current Setting Resistor ............................................ 35

Digital Power Supply.................................................................. 36

External Boost Function............................................................ 36

External Compensation Capacitor........................................... 36

HART Communication ............................................................. 36

Digital Slew Rate Control.......................................................... 36

IOUT Filtering Capacitors (LFCSP Package)............................. 37

Applications Information .............................................................. 39

Voltage and Current Output Ranges on the Same Terminal 39

Driving Inductive Loads............................................................ 39

Transient Voltage Protection .................................................... 39

Galvanically Isolated Interface ................................................. 39

Microprocessor Interfacing....................................................... 39

Layout Guidelines....................................................................... 40

Thermal and Supply Considerations ....................................... 40

Industrial Analog Output Module ........................................... 41

Industrial HART Capable Analog Output Application ........ 41

Outline Dimensions ....................................................................... 43

Ordering Guide .......................................................................... 44

Rev. O | Page 2 of 44

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