WM9001

Production Data

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PD, March 2010, Rev 4.1

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TABLE OF CONTENTS

DESCRIPTION .......................................................................................................1

FEATURES.............................................................................................................1

APPLICATIONS .....................................................................................................1

BLOCK DIAGRAM .................................................................................................1

TABLE OF CONTENTS .........................................................................................2

PIN CONFIGURATION...........................................................................................3

ORDERING INFORMATION ..................................................................................3

PIN DESCRIPTION ................................................................................................4

ABSOLUTE MAXIMUM RATINGS.........................................................................5

RECOMMENDED OPERATING CONDITIONS .....................................................5

THERMAL PERFORMANCE .................................................................................6

POWER DE-RATING .............................................................................................7

ELECTRICAL CHARACTERISTICS ......................................................................8

TERMINOLOGY............................................................................................................. 9

TYPICAL POWER CONSUMPTION ....................................................................10

SPEAKER DRIVER PERFORMANCE .................................................................11

CLASS D MODE .......................................................................................................... 11

CLASS AB MODE ........................................................................................................ 11

PSRR PERFORMANCE.......................................................................................12

EFFICIENCY ........................................................................................................13

AUDIO SIGNAL PATHS.......................................................................................14

DEVICE DESCRIPTION.......................................................................................15

INTRODUCTION.......................................................................................................... 15

POWER ON RESET .................................................................................................... 15

ENABLE....................................................................................................................... 15

INPUT SIGNAL PATH.................................................................................................. 16

SYNC ........................................................................................................................... 16

SPEAKER DRIVER MODE SELECT............................................................................ 17

SIGNAL BOOST CONTROL ........................................................................................ 17

THERMAL SHUTDOWN .............................................................................................. 18

RF NOISE SUPPRESSION.......................................................................................... 18

POPS / CLICK SUPPRESSION ................................................................................... 18

APPLICATIONS INFORMATION .........................................................................19

TYPICAL STAND-ALONE USAGE............................................................................... 19

TYPICAL USAGE WITH WM8991 CODEC ................................................................. 20

SPEAKER SELECTION ............................................................................................... 21

PCB LAYOUT CONSIDERATIONS.............................................................................. 22

RECOMMENDED EXTERNAL COMPONENTS........................................................... 23

PACKAGE DIMENSIONS ....................................................................................24

IMPORTANT NOTICE ..........................................................................................25

ADDRESS.................................................................................................................... 25