WM8740

Production Data

w

PD, Rev 4.4, April 2010

2

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 .....................................................6

ELECTRICAL CHARACTERISTICS ......................................................................6

INTERNAL POWER ON RESET CIRCUIT ............................................................9

DEVICE DESCRIPTION.......................................................................................12

SYSTEM CLOCK ........................................................................................................ 12

AUDIO DATA INTERFACE ......................................................................................... 12

NORMAL SAMPLE RATE ........................................................................................... 13

8 X FS INPUT SAMPLE RATE .................................................................................... 14

MODES OF OPERATION ........................................................................................... 14

HARDWARE CONTROL MODES ............................................................................... 14

SOFTWARE CONTROL INTERFACE......................................................................... 15

REGISTER MAP ......................................................................................................... 16

MUTE MODES ............................................................................................................ 20

FILTER RESPONSES ................................................................................................. 21

APPLICATIONS INFORMATION .........................................................................24

RECOMMENDED EXTERNAL COMPONENTS.......................................................... 24

RECOMMENDED EXTERNAL COMPONENTS VALUES ........................................... 24

SUGGESTED DIFFERENTIAL OUTPUT FILTER CIRCUIT........................................ 25

RECOMMENDED DUAL DIFFERENTIAL HARDWARE SETUP................................. 25

PACKAGE DIMENSIONS ....................................................................................26

ADDRESS: .................................................................................................................. 27