Datasheet

AD5737 Data Sheet
Rev. C | Page 2 of 44
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
Thermal Resistance .................................................................... 10
ESD Caution ................................................................................ 10
Pin Configuration and Function Descriptions ........................... 11
Typical Performance Characteristics ........................................... 14
Current Outputs ......................................................................... 14
DC-to-DC Converter ................................................................. 18
Reference ..................................................................................... 19
General ......................................................................................... 20
Terminology .................................................................................... 21
Theory of Operation ...................................................................... 22
DAC Architecture ....................................................................... 22
Power-On State of the AD5737 ................................................ 22
Serial Interface ............................................................................ 22
Transfer Function ....................................................................... 23
Registers ........................................................................................... 24
Enabling the Output ................................................................... 25
Reprogramming the Output Range ......................................... 25
Data Registers ............................................................................. 26
Control Registers ........................................................................ 28
Readback Operation .................................................................. 31
Device Features ............................................................................... 33
Fault Output ................................................................................ 33
Digital Offset and Gain Control ............................................... 33
Status Readback During a Write .............................................. 33
Asynchronous Clear ................................................................... 33
Packet Error Checking ............................................................... 34
Watchdog Timer ......................................................................... 34
Alert Output ................................................................................ 34
Internal Reference ...................................................................... 34
External Current Setting Resistor ............................................ 34
HART Connectivity ................................................................... 35
Digital Slew Rate Control .......................................................... 35
Dynamic Power Control............................................................ 36
DC-to-DC Converters ............................................................... 36
AI
CC
Supply Requirements—Static .......................................... 37
AI
CC
Supply Requirements—Slewing ...................................... 38
External PMOS Mode ................................................................ 39
Applications Information .............................................................. 40
Current Output Mode with Internal R
SET
................................ 40
Precision Voltage Reference Selection ..................................... 40
Driving Inductive Loads ............................................................ 40
Transient Voltage Protection .................................................... 41
Microprocessor Interfacing ....................................................... 41
Layout Guidelines....................................................................... 41
Galvanically Isolated Interface ................................................. 42
Industrial HART Capable Analog Output Application ........ 43
Outline Dimensions ....................................................................... 44
Ordering Guide .......................................................................... 44