ADFS5758 datasheet(2/75 Pages) AD

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ADFS5758

Data Sheet

Rev. 0 | Page 2 of 75

TABLE OF CONTENTS

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

Applications ...................................................................................... 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

Current Output........................................................................... 17

Voltage Output ........................................................................... 22

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

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

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

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

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

Functional Safety Operation..................................................... 31

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

Serial Interface ............................................................................ 32

Power-On State of the ADFS5758 ........................................... 32

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

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

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

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

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

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

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

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

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

ADFS5758 Address Pins ........................................................... 37

SPI Interface and Diagnostics .................................................. 38

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

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

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

Lockable User Configuration Space ........................................ 41

Use of Key Codes ....................................................................... 42

Software Reset............................................................................. 42

Calibration Memory CRC......................................................... 42

Background CRC Check ........................................................... 42

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

VLDO External Capacitor Detection.......................................... 43

Sticky Diagnostic Results Bits .................................................. 43

Background Supply and Temperature Monitoring .............. 43

Output Fault................................................................................ 43

ADC Monitoring........................................................................ 44

Writing to Registers................................................................... 50

Reading from Registers ............................................................. 51

Programming Sequence to Enable the Output Correctly .... 54

Applications Information ............................................................. 73

Outline Dimensions....................................................................... 75

Ordering Guide .......................................................................... 75

REVISION HISTORY

6/2020—Revision 0: Initial Version

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