AD5757 Analog Devices, AD5757 Datasheet - Page 2

• Manufacturer Part Number: AD5757
• Description: Quad Channel, 16-Bit, Serial Input, 4-20mA Output DAC, Dynamic Power Control, HART Connectivity
• Manufacturer: Analog Devices

Specifications of AD5757

• Resolution (bits): 16bit
• Dac Update Rate: 60kSPS
• Dac Settling Time: 15µs
• Max Pos Supply (v): +33V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: SPI

AD5757
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
Absolute Maximum Ratings.......................................................... 10
Pin Configuration and Function Descriptions........................... 11
Typical Performance Characteristics ........................................... 14
Terminology .................................................................................... 22
Theory of Operation ...................................................................... 23
Registers ........................................................................................... 25
AC Performance Characteristics ................................................ 7
Timing Characteristics ................................................................ 7
ESD Caution................................................................................ 10
Current Outputs ......................................................................... 14
DC-to-DC Block......................................................................... 19
Reference ..................................................................................... 20
General......................................................................................... 21
DAC Architecture....................................................................... 23
Power-On State of the AD5757 ................................................ 23
Serial Interface ............................................................................ 23
Transfer Function ....................................................................... 24
Programming Sequence to Write/Enable the Output
Correctly ...................................................................................... 26
Changing and Reprogramming the Range ............................. 26
Data Registers ............................................................................. 27
Rev. B | Page 2 of 44
Device Features............................................................................... 34
Applications Information .............................................................. 40
Outline Dimensions ....................................................................... 43
Control Registers........................................................................ 29
Readback Operation .................................................................. 32
Output Fault................................................................................ 34
Digital Offset and Gain Control............................................... 34
Status Readback During a Write .............................................. 34
Asynchronous Clear................................................................... 34
Packet Error Checking............................................................... 34
Watchdog Timer......................................................................... 35
Output Alert................................................................................ 35
Internal Reference ...................................................................... 35
External Current Setting Resistor ............................................ 35
HART ........................................................................................... 35
Digital Slew Rate Control.......................................................... 36
Power Dissipation Control........................................................ 36
DC-to-DC Converters............................................................... 36
AI
AI
External PMOS Mode................................................................ 39
Current Output Mode with Internal R
Precision Voltage Reference Selection..................................... 40
Driving Inductive Loads............................................................ 40
Transient Voltage Protection .................................................... 41
Microprocessor Interfacing....................................................... 41
Layout Guidelines....................................................................... 41
Galvanically Isolated Interface ................................................. 42
Ordering Guide .......................................................................... 43
CC
CC
Supply Requirements—Static .......................................... 38
Supply Requirements—Slewing ...................................... 38
SET
................................ 40
Data Sheet