AD8614/AD8644

Rev. B | Page 2 of 16

TABLE OF CONTENTS

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

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

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

Pin Configurations ........................................................................... 1

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

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

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

Absolute Maximum Ratings............................................................ 4

Thermal Resistance ...................................................................... 4

ESD Caution.................................................................................. 4

Typical Performance Characteristics ............................................. 5

Theory of Operation ........................................................................ 9

Output Short-Circuit Protection.................................................9

Input Overvoltage Protection ................................................... 10

Output Phase Reversal............................................................... 10

Power Dissipation....................................................................... 10

Unused Amplifiers ..................................................................... 10

Capacitive Load Drive ............................................................... 11

Direct Access Arrangement ...................................................... 11

A One-Chip Headphone/Microphone Preamplifier

Solution........................................................................................ 11

Outline Dimensions ....................................................................... 13

Ordering Guide .......................................................................... 14

REVISION HISTORY

9/07—Rev. A to Rev B

Change to Current Noise Density in Table 1 ................................ 3

12/06—Rev. 0 to Rev. A

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

Deleted SPICE Model Availability Section.................................. 12

Updated Outline Dimensions ....................................................... 13

Changes to Ordering Guide .......................................................... 14

10/99—Revision 0: Initial Version