Data Sheet

ADA4870

TABLE OF CONTENTS

analog.com

Rev. B | 2 of 24

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

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

Functional Block Diagram......................................1

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

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

±20 V Supply...................................................... 3

±5 V Supply........................................................ 4

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

Maximum Power Dissipation.............................. 6

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

Pin Configuration and Function Descriptions........ 7

Typical Performance Characteristics..................... 8

Applications Information...................................... 19

ON, Initial Power-Up, and Short-Circuit............19

Thermal Protection........................................... 19

Shutdown (SD).................................................19

Feedback Resistor Selection............................19

Capacitive Load Driving................................... 19

Heat and Thermal Management.......................20

Power Dissipation.............................................20

Safe Operating Area.........................................20

Printed Circuit Board (PCB)............................. 22

Thermal Modeling.............................................22

Heat Sink Selection..........................................22

Power Supplies and Decoupling...................... 22

Composite Amplifier......................................... 23

Outline Dimensions............................................. 24

Ordering Guide.................................................24

Evaluation Boards............................................ 24

REVISION HISTORY

10/2023—Rev. A to Rev. B

Changes to Data Sheet Title............................................................................................................................1

Changes to Features Section.......................................................................................................................... 1

Changes to Figure 1........................................................................................................................................ 1

Changes to General Description Section and Figure 2....................................................................................1

Added Note 1, Table 1..................................................................................................................................... 3

Added Note 1, Table 2..................................................................................................................................... 4

Changes to Maximum Power Dissipation Section and Table 4........................................................................6

Changes to Figure 3 and Table 5.....................................................................................................................7

Changes to Typical Performance Characteristics Section............................................................................... 8

Changes to ON, Initial Power-Up, and Short-Circuit Section.........................................................................19

Changes to Thermal Protection Section........................................................................................................ 19

Changes to Heat and Thermal Management Section....................................................................................20

Changes to Safe Operating Area Section, Figure 74, and Figure 75............................................................ 20

Changes to Printed Circuit Board (PCB) Section ..........................................................................................22

Changes to Heat Sink Selection Section....................................................................................................... 22

Changes to Table 7........................................................................................................................................22

Updated Outline Dimensions......................................................................................................................... 24

Changes to Ordering Guide........................................................................................................................... 24

Changes to Evaluation Boards...................................................................................................................... 24

8/2022—Rev. 0 to Rev. A

Change to Power Dissipation Section............................................................................................................20

5/2014—Revision 0: Initial Version