WM8751L Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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WM8751L

Stereo DAC For Portable Audio Applications

Wolfson Microelectronics plc 

WM8751L

TABLE OF CONTENTS

Production Data

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

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

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

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

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

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

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

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

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

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

TERMINOLOGY............................................................................................................. 7

OUTPUT PGA’S LINEARITY ......................................................................................... 8

SIGNAL TIMING REQUIREMENTS .....................................................................11

SYSTEM CLOCK TIMING............................................................................................ 11

AUDIO INTERFACE TIMING – MASTER MODE ......................................................... 11

AUDIO INTERFACE TIMING – SLAVE MODE ............................................................ 13

CONTROL INTERFACE TIMING – 3-WIRE MODE ..................................................... 13

CONTROL INTERFACE TIMING – 2-WIRE MODE ..................................................... 14

INTERNAL POWER ON RESET CIRCUIT ..........................................................15

DEVICE DESCRIPTION.......................................................................................16

INTRODUCTION.......................................................................................................... 16

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

LINE INPUTS AND OUTPUT MIXERS ........................................................................ 20

ANALOGUE OUTPUTS ............................................................................................... 23

DIGITAL AUDIO INTERFACE...................................................................................... 27

MASTER CLOCK AND AUDIO SAMPLE RATES ........................................................ 32

POWER SUPPLIES ..................................................................................................... 35

POWER MANAGEMENT ............................................................................................. 36

REGISTER MAP...................................................................................................38

DIGITAL FILTER CHARACTERISTICS ...............................................................39

TERMINOLOGY........................................................................................................... 39

DAC FILTER RESPONSES ......................................................................................... 39

APPLICATIONS INFORMATION .........................................................................41

RECOMMENDED EXTERNAL COMPONENTS........................................................... 41

MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS ........................................ 42

LINE OUTPUT CONFIGURATION............................................................................... 42

HEADPHONE OUTPUT CONFIGURATION ................................................................ 43

SPEAKER OUTPUT CONFIGURATION...................................................................... 43

PACKAGE DIMENSIONS ....................................................................................44

IMPORTANT NOTICE ..........................................................................................45

ADDRESS:................................................................................................................... 45

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PD Rev 4.2 August 2006

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