Datasheet

ADR420/ADR421/ADR423/ADR425 Data Sheet
Rev. J | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configuration ............................................................................. 1
General Description ......................................................................... 1
ADR42x Products ............................................................................. 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
ADR420 Electrical Specifications ............................................... 4
ADR421 Electrical Specifications ............................................... 5
ADR423 Electrical Specifications ............................................... 6
ADR425 Electrical Specifications ............................................... 7
Absolute Maximum Ratings ............................................................ 8
Thermal Resistance ...................................................................... 8
ESD Caution .................................................................................. 8
Pin Configurations and Function Descriptions ........................... 9
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
Device Power Dissipation Considerations .............................. 17
Basic Voltage Reference Connections ..................................... 17
Noise Performance ..................................................................... 17
Turn -On Time ............................................................................ 17
Applications ..................................................................................... 18
Output Adjustment .................................................................... 18
Reference for Converters in Optical Network Control
Circuits......................................................................................... 18
High Voltage Floating Current Source .................................... 18
Kelvin Connections .................................................................... 19
Dual-Polarity References ........................................................... 19
Programmable Current Source ................................................ 20
Programmable DAC Reference Voltage .................................. 20
Precision Voltage Reference for Data Converters .................. 21
Precision Boosted Output Regulator ....................................... 21
Outline Dimensions ....................................................................... 22
Ordering Guide .......................................................................... 23