WM8750CLSEFLSLASHR datasheet(2/65 Pages) WOLFSON

2 / 65 page

WM8750L

Production Data

PD, Rev 4.4, August 2012

TABLE OF CONTENTS

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

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

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

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

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

PIN CONFIGURATION .......................................................................................... 4

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

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

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

RECOMMENDED OPERATION CONDITIONS..................................................... 6

ELECTRICAL CHARACTERISTICS ..................................................................... 7

OUTPUT PGA’S LINEARITY ........................................................................................... 9

HEADPHONE OUTPUT THD VERSUS POWER .......................................................... 10

SPEAKER THD AND NOISE VERSUS POWER ........................................................... 11

POWER CONSUMPTION.................................................................................... 12

SIGNAL TIMING REQUIREMENTS .................................................................... 13

SYSTEM CLOCK TIMING.............................................................................................. 13

AUDIO INTERFACE TIMING – MASTER MODE .......................................................... 13

AUDIO INTERFACE TIMING – SLAVE MODE.............................................................. 14

CONTROL INTERFACE TIMING – 3-WIRE MODE....................................................... 15

CONTROL INTERFACE TIMING – 2-WIRE MODE....................................................... 16

INTERNAL POWER ON RESET CIRCUIT.......................................................... 17

DEVICE DESCRIPTION ...................................................................................... 18

INTRODUCTION............................................................................................................ 18

INPUT SIGNAL PATH.................................................................................................... 18

AUTOMATIC LEVEL CONTROL (ALC) ......................................................................... 25

OUTPUT SIGNAL PATH ................................................................................................ 29

ANALOGUE OUTPUTS ................................................................................................. 34

ENABLING THE OUTPUTS ........................................................................................... 36

HEADPHONE SWITCH.................................................................................................. 37

THERMAL SHUTDOWN ................................................................................................ 38

HEADPHONE OUTPUT ................................................................................................. 38

DIGITAL AUDIO INTERFACE........................................................................................ 40

AUDIO INTERFACE CONTROL .................................................................................... 44

CLOCKING AND SAMPLE RATES................................................................................ 47

CONTROL INTERFACE................................................................................................. 49

POWER SUPPLIES ....................................................................................................... 50

POWER MANAGEMENT ............................................................................................... 51

DIGITAL FILTER CHARACTERISTICS .............................................................. 55

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

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

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

DE-EMPHASIS FILTER RESPONSES .......................................................................... 58

HIGHPASS FILTER ....................................................................................................... 59

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

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

LINE INPUT CONFIGURATION..................................................................................... 61

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