AD5757/AD5737

Preliminary Technical Data

Rev. PrD | Page 2 of 31

TABLE OF CONTENTS

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

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

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

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

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

Specifications..................................................................................... 3

AC Performance Characteristics................................................ 5

Timing Characteristics ................................................................ 6

Absolute Maximum Ratings............................................................ 9

ESD Caution.................................................................................. 9

Pin Configuration and Function Descriptions........................... 10

Typical Performance Characteristics ........................................... 13

Theory of Operation ...................................................................... 14

DAC Architecture....................................................................... 14

Power On State of AD5757/AD5737 ....................................... 14

Serial Interface ............................................................................ 14

Registers........................................................................................... 15

Programming Sequence to Write/Enable the Output

Correctly...................................................................................... 16

Changing and Reprogramming the Range ............................. 16

Data Registers ............................................................................. 17

Control Registers........................................................................ 20

Readback Operation .................................................................. 23

Features............................................................................................ 25

Output Fault................................................................................ 25

Digital Offset and Gain Control............................................... 25

Status Readback During Write ................................................. 25

Asynchronous Clear................................................................... 25

Packet Error Checking............................................................... 26

Watchdog timer.......................................................................... 26

Output Alert................................................................................ 26

Internal Reference ...................................................................... 26

External current setting resistor............................................... 26

HART........................................................................................... 26

Slew rate control ......................................................................... 26

Power Dissipation control......................................................... 27

DC-DC Converters.................................................................... 27

Applications Information.............................................................. 29

Precision Voltage Reference Selection..................................... 29

Driving Inductive Loads............................................................ 29

Transient voltage protection ..................................................... 29

Microprocessor Interfacing....................................................... 29

Layout Guidelines....................................................................... 29

Galvanically Isolated Interface ................................................. 30

Outline Dimensions....................................................................... 31

Ordering Guide .......................................................................... 31