WM8750L
Production Data
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
REGISTER MAP.................................................................................................. 54
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
PD, Rev 4.4, August 2012
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
