AD5421_11 AD [Analog Devices], AD5421_11 Datasheet - Page 2

• Manufacturer Part Number: AD5421_11
• Description: 16-Bit, Serial Input, Loop-Powered, 4 mA to 20 mA DAC
• Manufacturer: AD [Analog Devices]

AD5421
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 9
Pin Configuration and Function Descriptions ........................... 10
Typical Performance Characteristics ........................................... 12
Terminology .................................................................................... 18
Theory of Operation ...................................................................... 19
REVISION HISTORY
2/11—Revision 0: Initial Version
AC Performance Characteristics ................................................ 7
Timing Characteristics ................................................................ 7
Thermal Resistance ...................................................................... 9
ESD Caution .................................................................................. 9
Fault Alerts .................................................................................. 19
External Current Setting Resistor ............................................ 20
Loop Current Range Selection .................................................. 20
Connection to Loop Power Supply .......................................... 20
Rev. 0 | Page 2 of 32
Serial Interface ................................................................................ 24
Applications Information .............................................................. 30
Outline Dimensions ....................................................................... 32
On-Chip ADC ............................................................................ 21
Voltage Regulator ....................................................................... 21
Loop Current Slew Rate Control .............................................. 21
Power-On Default ...................................................................... 21
HART Communications ........................................................... 22
Input Shift Register .................................................................... 24
Register Readback ...................................................................... 24
DAC Register .............................................................................. 25
Control Register ......................................................................... 26
Fault Register .............................................................................. 27
Offset Adjust Register ................................................................ 28
Gain Adjust Register .................................................................. 28
Determining the Expected Total Error ................................... 30
Thermal and Supply Considerations ....................................... 31
Ordering Guide .......................................................................... 32