AD5758 datasheet(2/72 Pages) AD

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AD5758

Data Sheet

Rev. 0 | Page 2 of 72

TABLE OF CONTENTS

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

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

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

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

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

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

Functional Block Diagram .............................................................. 3

Specifications..................................................................................... 4

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

Timing Characteristics .............................................................. 11

Absolute Maximum Ratings.......................................................... 14

Thermal Resistance .................................................................... 14

ESD Caution................................................................................ 14

Pin Configuration and Function Descriptions........................... 15

Typical Performance Characteristics ........................................... 17

Voltage Output............................................................................ 17

Current Outputs ......................................................................... 21

DC-to-DC Block......................................................................... 26

Reference ..................................................................................... 27

General......................................................................................... 28

Terminology .................................................................................... 29

Theory of Operation ...................................................................... 31

DAC Architecture....................................................................... 31

Serial Interface ............................................................................ 31

Power-On State of the AD5758 ................................................ 32

Power Supply Considerations ................................................... 32

Device Features and Diagnostics.................................................. 34

Power Dissipation Control........................................................ 34

Interdie 3-Wire Interface........................................................... 35

Voltage Output............................................................................ 36

Fault Protection Switches .......................................................... 36

Current Output........................................................................... 36

Internal Current Output Monitor ............................................ 37

HART Connectivity ................................................................... 37

Digital Slew Rate Control.......................................................... 37

Device Under Test (DUT) Address Pins ................................. 38

Watchdog Timer (WDT)........................................................... 39

User Digital Offset and Gain Control...................................... 39

DAC Output Update and Data Integrity Diagnostics ........... 40

Use of Key Codes........................................................................ 41

Software Reset............................................................................. 41

Calibration Memory CRC......................................................... 41

Internal Oscillator Diagnostics................................................. 42

Sticky Diagnostic Results Bits................................................... 42

Background Supply and Temperature Monitoring................ 42

Output Fault................................................................................ 42

ADC Monitoring ........................................................................ 43

Writing to Registers ................................................................... 48

Reading from Registers ............................................................. 49

Programming Sequence to Enable the Output ...................... 52

Applications Information .............................................................. 70

Example Module Power Calculation ....................................... 70

Driving Inductive Loads............................................................ 71

Outline Dimensions ....................................................................... 72

Ordering Guide............................................................................... 72

REVISION HISTORY

5/2018—Revision 0: Initial Version

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