ADR121/ADR125/ADR127

Rev. B | Page 2 of 20

TABLE OF CONTENTS

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

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

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

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

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

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

ADR121 Electrical Characteristics............................................. 3

ADR125 Electrical Characteristics............................................. 4

ADR127 Electrical Characteristics............................................. 5

Absolute Maximum Ratings............................................................ 6

Thermal Resistance ...................................................................... 6

ESD Caution.................................................................................. 6

Typical Performance Characteristics ............................................. 7

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

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

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

Input Capacitor........................................................................... 16

Output Capacitor........................................................................ 16

Applications Information .............................................................. 17

Basic Voltage Reference Connection ....................................... 17

Stacking Reference ICs for Arbitrary Outputs ....................... 17

Negative Precision Reference Without Precision Resistors.. 17

General-Purpose Current Source ............................................ 17

Outline Dimensions ....................................................................... 18

Ordering Guide .......................................................................... 18

REVISION HISTORY

1/08—Rev. A to Rev. B

Changes to Table 1............................................................................ 3

Changes to Table 2............................................................................ 4

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

5

Changes to Figure 52...................................................................... 17

Changes to Ordering Guide ......................................................... 18

5/07—Rev. 0 to Rev. A

Changes to Table 1............................................................................ 3

Changes to Table 2............................................................................ 4

Changes to Table 3............................................................................ 5

Added Thermal Hysteresis Equation ............................................. 7

Changes to Ordering Guide .......................................................... 18

6/06—Revision 0: Initial Version