
WM9712L
Production Data
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PD Rev 4.0 December 2003
2
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 OPERATING CONDITIONS .....................................................6
ELECTRICAL CHARACTERISTICS ......................................................................7
AUDIO OUTPUTS..........................................................................................................7
AUDIO INPUTS..............................................................................................................8
AUXILIARY MONO DAC (AUXDAC)..............................................................................8
TOUCHPANEL AND AUXILIARY ADC ..........................................................................9
COMPARATORS...........................................................................................................9
REFERENCE VOLTAGES...........................................................................................10
DIGITAL INTERFACE CHARACTERISTICS................................................................10
HEADPHONE / SPEAKER OUTPUT THD VERSUS POWER.....................................11
POWER CONSUMPTION............................................................................................12
DEVICE DESCRIPTION.......................................................................................13
INTRODUCTION..........................................................................................................13
AUDIO PATHS OVERVIEW.........................................................................................14
AUDIO INPUTS....................................................................................................15
LINE INPUT .................................................................................................................15
MICROPHONE INPUT.................................................................................................15
PHONE INPUT.............................................................................................................17
PCBEEP INPUT...........................................................................................................18
AUDIO ADC..........................................................................................................19
RECORD SELECTOR .................................................................................................20
RECORD GAIN............................................................................................................21
AUTOMATIC LEVEL CONTROL..................................................................................22
AUDIO DACS .......................................................................................................25
STEREO DAC..............................................................................................................25
AUXILIARY DAC..........................................................................................................28
ANALOGUE AUDIO OUTPUTS...........................................................................29
HEADPHONE OUTPUTS – HPOUTL AND HPOUTR..................................................29
EAR SPEAKER OUTPUT – OUT3...............................................................................30
LOUDSPEAKER OUTPUTS – LOUT2 AND ROUT2....................................................31
PHONE OUTPUT (MONOOUT)...................................................................................32
THERMAL SENSOR....................................................................................................32
JACK INSERTION AND AUTO-SWITCHING...............................................................33
DIGITAL AUDIO (SPDIF) OUTPUT .............................................................................34
AUDIO MIXERS...........................................................................................................35