WM8731SEDSSLASHV datasheet(2/65 Pages) WOLFSON

2 / 65 page

WM8731 / WM8731L

Production Data

PD, Rev 4.9, October 2012

TABLE OF CONTENTS

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

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

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

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

PIN CONFIGURATION - 28 PIN SSOP ................................................................ 3

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

PIN CONFIGURATION – 28 PIN QFN................................................................... 4

ORDERING INFORMATION.................................................................................. 4

PIN DESCRIPTION................................................................................................ 5

ABSOLUTE MAXIMUM RATINGS ........................................................................ 6

RECOMMENDED OPERATING CONDITIONS – WM8731 .................................. 6

RECOMMENDED OPERATING CONDITIONS – WM8731L ................................ 6

ELECTRICAL CHARACTERISTICS – WM8731 ................................................... 7

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

POWER CONSUMPTION – WM8731.................................................................. 10

ELECTRICAL CHARACTERISTICS – WM8731L ............................................... 11

TERMINOLOGY ............................................................................................................ 13

POWER CONSUMPTION – WM8731L ............................................................... 14

MASTER CLOCK TIMING................................................................................... 15

DIGITAL AUDIO INTERFACE – MASTER MODE ........................................................ 16

DIGITAL AUDIO INTERFACE – SLAVE MODE............................................................ 17

MPU INTERFACE TIMING............................................................................................ 18

DEVICE DESCRIPTION ...................................................................................... 20

INTRODUCTION ........................................................................................................... 20

AUDIO SIGNAL PATH................................................................................................... 21

DEVICE OPERATION ................................................................................................... 34

AUDIO DATA SAMPLING RATES ................................................................................ 41

ACTIVATING DSP AND DIGITAL AUDIO INTERFACE................................................ 45

SOFTWARE CONTROL INTERFACE........................................................................... 45

POWER DOWN MODES............................................................................................... 47

REGISTER MAP............................................................................................................ 49

DIGITAL FILTER CHARACTERISTICS .............................................................. 54

TERMINOLOGY ............................................................................................................ 55

DAC FILTER RESPONSES................................................................................. 56

ADC FILTER RESPONSES................................................................................. 57

ADC HIGH PASS FILTER ............................................................................................. 58

DIGITAL DE-EMPHASIS CHARACTERISTICS .................................................. 58

DIGITAL DE-EMPHASIS CHARACTERISTICS .................................................. 59

APPLICATIONS INFORMATION ........................................................................ 60

RECOMMENDED EXTERNAL COMPONENTS ........................................................... 60

MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS......................................... 61

PACKAGE DIMENSIONS - SSOP....................................................................... 62

PACKAGE DIMENSIONS - QFN ......................................................................... 63

IMPORTANT NOTICE ......................................................................................... 64

ADDRESS: .................................................................................................................... 64

WM8731SEDS/V 数据表(PDF) 2 Page - Wolfson Microelectronics plc

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