Datasheet

AD5755-1 Data Sheet
Rev. E | Page 2 of 52
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
ESD Caution ................................................................................ 12
Pin Configuration and Function Descriptions ........................... 13
Typical Performance Characteristics ........................................... 16
Voltage Outputs .......................................................................... 16
Current Outputs ......................................................................... 20
DC-to-DC Block ......................................................................... 24
Reference ..................................................................................... 25
General ......................................................................................... 26
Terminology .................................................................................... 27
Theory of Operation ...................................................................... 29
DAC Architecture ....................................................................... 29
Power-On State of the AD5755-1 ............................................. 29
Serial Interface ............................................................................ 30
Transfer Function ....................................................................... 30
Registers ........................................................................................... 31
Programming Sequence to Write/Enable the Output
Correctly ...................................................................................... 32
Changing and Reprogramming the Range ............................. 32
Data Registers ............................................................................. 33
Control Registers ........................................................................ 35
Readback Operation................................................................... 38
Device Features ............................................................................... 40
Output Fault ................................................................................ 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
Output Alert ................................................................................ 41
Internal Reference ...................................................................... 41
External Current Setting Resistor ............................................ 41
HART ........................................................................................... 42
Digital Slew Rate Control .......................................................... 42
Power Dissipation control ......................................................... 43
DC-to-DC Converters ............................................................... 43
AI
CC
Supply Requirements—Static .......................................... 44
AI
CC
Supply Requirements—Slewing ...................................... 44
Applications Information .............................................................. 46
Voltage and Current Output Ranges on the Same
Terminal ...................................................................................... 46
Current Output Mode with Internal R
SET
................................ 46
Precision Voltage Reference Selection ..................................... 46
Driving Inductive Loads ............................................................ 47
Transient Voltage Protection .................................................... 47
Microprocessor Interfacing ....................................................... 47
Layout Guidelines....................................................................... 47
Galvanically Isolated Interface ................................................. 48
Industrial HART Capable Analog Output Application—
Shared V
OUT_x
and I
OUT_x
Pin ...................................................... 49
Outline Dimensions ....................................................................... 50
Ordering Guide .......................................................................... 50