ADR420/ADR421/ADR423/ADR425

Rev. I | Page 2 of 24

TABLE OF CONTENTS

Features .............................................................................................. 1

 

Applications....................................................................................... 1

 

Pin Configuration............................................................................. 1

 

General Description ......................................................................... 1

 

ADR42x Products............................................................................. 1

 

Revision History ............................................................................... 2

 

Specifications..................................................................................... 3

 

ADR420 Electrical Specifications............................................... 3

 

ADR421 Electrical Specifications............................................... 4

 

ADR423 Electrical Specifications............................................... 5

 

ADR425 Electrical Specifications............................................... 6

 

Absolute Maximum Ratings............................................................ 7

 

Thermal Resistance ...................................................................... 7

 

ESD Caution.................................................................................. 7

 

Pin Configurations and Function Descriptions ........................... 8

 

Typical Performance Characteristics ............................................. 9

 

Terminology .................................................................................... 15

 

Theory of Operation ...................................................................... 16

 

Device Power Dissipation Considerations.............................. 16

 

Basic Voltage Reference Connections ..................................... 16

 

Noise Performance ..................................................................... 16

 

Turn-On Time ............................................................................ 16

 

Applications..................................................................................... 17

 

Output Adjustment .................................................................... 17

 

Reference for Converters in Optical Network Control

Circuits......................................................................................... 17

 

High Voltage Floating Current Source .................................... 17

 

Kelvin Connections.................................................................... 18

 

Dual-Polarity References........................................................... 18

 

Programmable Current Source ................................................ 19

 

Programmable DAC Reference Voltage .................................. 19

 

Precision Voltage Reference for Data Converters.................. 20

 

Precision Boosted Output Regulator ....................................... 20

 

Outline Dimensions ....................................................................... 21

 

Ordering Guide .......................................................................... 22

 

REVISION HISTORY

5/11—Rev. H to Rev. I

Added Endnote 1 in Table 2............................................................ 4

Added Endnote 1 in Table 3............................................................ 5

Added Endnote 1 in Table 4............................................................ 6

Added Endnote 1 in Table 5............................................................ 7

Deleted A Negative Precision Reference Without Precision

Resistors Section ............................................................................. 17

Deleted Figure 42; Renumbered Sequentially ............................ 17

Updated Outline Dimensions ....................................................... 21

Changes to Ordering Guide .......................................................... 22

6/07—Rev. G to Rev. H

Changes to Table 2............................................................................ 3

Changes to Table 3............................................................................ 4

Changes to Table 4............................................................................ 5

Changes to Table 5............................................................................ 6

Updated Outline Dimensions ....................................................... 21

Changes to Ordering Guide .......................................................... 22

6/05—Rev. F to Rev. G

Changes to Table 1............................................................................ 1

Changes to Ordering Guide .......................................................... 22

2/05—Rev. E to Rev. F

Updated Format..................................................................Universal

Updated Outline Dimensions ....................................................... 21

Changes to Ordering Guide .......................................................... 22

7/04—Rev. D to Rev. E

Changes to Ordering Guide .............................................................5

3/04—Rev. C to Rev. D

Changes to Table I .............................................................................1

Changes to Ordering Guide .............................................................4

Updated Outline Dimensions....................................................... 16

1/03—Rev. B to Rev. C

Changed Mini_SOIC to MSOP ........................................Universal

Changes to Ordering Guide .............................................................4

Corrections to Y-axis labels in TPCs 21 and 24 ............................9

Enhancement to Figure 13 ............................................................ 15

Updated Outline Dimensions....................................................... 16

3/02—Rev. A to Rev. B

Edits to Ordering Guide ...................................................................4

Deletion of Precision Voltage Regulator section........................ 15

Addition of Precision Boosted Output Regulator section ....... 15

Addition of Figure 13..................................................................... 15

10/01—Rev. 0 to Rev. A

Addition of ADR423 and ADR425 to

ADR420/ADR421...............................................................Universal

5/01—Revision 0: Initial Version