AD5735 Ver la hoja de datos (PDF) - Analog Devices

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AD5735

Quad-Channel, 12-Bit, Serial Input, 4 mA to 20 mA and Voltage Output DAC with Dynamic Power Control

Analog Devices 

AD5735

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 ................................................ 8

Timing Characteristics ................................................................ 9

Absolute Maximum Ratings.......................................................... 12

Thermal Resistance .................................................................... 12

ESD Caution................................................................................ 12

Pin Configuration and Function Descriptions........................... 13

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

Voltage Outputs .......................................................................... 16

Current Outputs ......................................................................... 20

DC-to-DC Converter................................................................. 24

Reference ..................................................................................... 25

General......................................................................................... 26

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

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

DAC Architecture....................................................................... 29

Power-On State of the AD5735 ................................................ 30

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

Transfer Function ....................................................................... 30

Registers ........................................................................................... 31

Enabling the Output................................................................... 32

Reprogramming the Output Range ......................................... 32

Data Sheet

Data Registers ............................................................................. 33

Control Registers ........................................................................ 35

Readback Operation .................................................................. 38

Device Features ............................................................................... 40

Fault Output ................................................................................ 40

Voltage Output Short-Circuit Protection................................ 40

Digital Offset and Gain Control............................................... 40

Status Readback During a Write .............................................. 40

Asynchronous Clear................................................................... 41

Packet Error Checking............................................................... 41

Watchdog Timer......................................................................... 41

Alert Output................................................................................ 41

Internal Reference ...................................................................... 41

External Current Setting Resistor ............................................ 42

Digital Slew Rate Control.......................................................... 42

Dynamic Power Control............................................................ 43

DC-to-DC Converters ............................................................... 43

AICC Supply Requirements—Static .......................................... 44

AICC Supply Requirements—Slewing ...................................... 44

Applications Information .............................................................. 46

Voltage and Current Output Pins on the Same Terminal ..... 46

Current Output Mode with Internal RSET................................ 46

Precision Voltage Reference Selection..................................... 46

Driving Inductive Loads............................................................ 47

Transient Voltage Protection .................................................... 47

Microprocessor Interfacing....................................................... 47

Layout Guidelines....................................................................... 47

Galvanically Isolated Interface ................................................. 48

Outline Dimensions ....................................................................... 49

Ordering Guide .......................................................................... 49

Rev. E | Page 2 of 49

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