EVAL-AD5755-1SDZ データシートの表示（PDF） - Analog Devices

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EVAL-AD5755-1SDZ

Quad Channel, 16-Bit, Serial Input, 4 mA to 20 mA Output DAC, Dynamic Power Control, HART Connectivity

Analog Devices 

AD5757

TABLE OF CONTENTS

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

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

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

Product Highlights........................................................................ 1

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

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

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

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

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

AC Performance Characteristics.............................................. 7

Timing Characteristics.............................................................. 7

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

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

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

Typical Performance Characteristics.......................................... 14

Current Outputs...................................................................... 14

DC-to-DC Block...................................................................... 19

Reference.................................................................................. 20

General..................................................................................... 21

Terminology................................................................................. 22

Theory of Operation.................................................................... 23

DAC Architecture.................................................................... 23

Power-On State of the AD5757 .............................................. 23

Serial Interface ......................................................................... 23

Transfer Function.................................................................... 24

Registers....................................................................................... 25

Programming Sequence to Write/Enable the Output

Correctly................................................................................... 26

Changing and Reprogramming the Range............................ 26

Data Registers.......................................................................... 27

Control Registers..................................................................... 29

Data Sheet

Readback Operation................................................................ 32

Device Features............................................................................ 34

Output Fault............................................................................. 34

Digital Offset and Gain Control............................................. 34

Status Readback During a Write............................................. 34

Asynchronous Clear................................................................ 34

Packet Error Checking ............................................................ 35

Watchdog Timer...................................................................... 35

Output Alert............................................................................. 35

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

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

HART........................................................................................ 36

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

Power Dissipation Control...................................................... 37

DC-to-DC Converters............................................................. 37

AICC Supply Requirements—Static......................................... 38

AICC Supply Requirements—Slewing..................................... 38

External PMOSMode ............................................................. 40

Applications Information............................................................ 41

Current Output Mode with Internal RSET............................... 41

Precision Voltage Reference Selection.................................... 41

Driving Inductive Loads......................................................... 41

Transient Voltage Protection................................................... 42

Microprocessor Interfacing..................................................... 42

Layout Guidelines.................................................................... 42

Galvanically Isolated Interface................................................ 43

Industrial HART Capable Analog Output Application........ 44

Outline Dimensions.................................................................... 45

Ordering Guide........................................................................ 45

Rev. G | Page 2 of 45

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