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WM8750JL Datasheet(PDF) 2 Page - Wolfson Microelectronics plc |
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WM8750JL Datasheet(HTML) 2 Page - Wolfson Microelectronics plc |
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2 / 61 page  WM8750JL Production Data w PD, April 2012, Rev 4.1 2 TABLE OF CONTENTS DESCRIPTION ................................................................................................................... 1 FEATURES......................................................................................................................... 1 APPLICATIONS ................................................................................................................. 1 BLOCK DIAGRAM ............................................................................................................. 1 TABLE OF CONTENTS ..................................................................................................... 2 PIN CONFIGURATION....................................................................................................... 3 ORDERING INFORMATION .............................................................................................. 3 PIN DESCRIPTION ............................................................................................................ 4 ABSOLUTE MAXIMUM RATINGS..................................................................................... 5 RECOMMENDED OPERATION CONDITIONS ................................................................. 5 ELECTRICAL CHARACTERISTICS .................................................................................. 6 TYPICAL PERFORMANCE................................................................................................ 8 POWER CONSUMPTION............................................................................................................... 8 OUTPUT DRIVERS ........................................................................................................................ 9 OUTPUT PGA’S LINEARITY ........................................................................................................ 10 SIGNAL TIMING REQUIREMENTS ................................................................................. 11 SYSTEM CLOCK TIMING ............................................................................................................ 11 AUDIO INTERFACE TIMING – MASTER MODE......................................................................... 11 AUDIO INTERFACE TIMING – SLAVE MODE ............................................................................ 12 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 INPUT SIGNAL PATH................................................................................................................... 16 AUTOMATIC LEVEL CONTROL (ALC)........................................................................................ 23 OUTPUT SIGNAL PATH............................................................................................................... 27 ANALOGUE OUTPUTS ................................................................................................................ 32 ENABLING THE OUTPUTS.......................................................................................................... 34 HEADPHONE SWITCH ................................................................................................................ 34 THERMAL SHUTDOWN............................................................................................................... 36 HEADPHONE OUTPUT................................................................................................................ 36 DIGITAL AUDIO INTERFACE ...................................................................................................... 37 AUDIO INTERFACE CONTROL................................................................................................... 42 CLOCKING AND SAMPLE RATES .............................................................................................. 44 CONTROL INTERFACE ............................................................................................................... 46 POWER SUPPLIES ...................................................................................................................... 47 POWER MANAGEMENT.............................................................................................................. 47 REGISTER MAP............................................................................................................... 50 DIGITAL FILTER CHARACTERISTICS........................................................................... 51 TERMINOLOGY............................................................................................................................ 51 DAC FILTER RESPONSES.......................................................................................................... 52 ADC FILTER RESPONSES.......................................................................................................... 53 DE-EMPHASIS FILTER RESPONSES ........................................................................................ 54 HIGHPASS FILTER ...................................................................................................................... 55 APPLICATIONS INFORMATION ..................................................................................... 56 RECOMMENDED EXTERNAL COMPONENTS .......................................................................... 56 LINE INPUT CONFIGURATION ................................................................................................... 57 MICROPHONE INPUT CONFIGURATION .................................................................................. 57 MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS........................................................ 57 POWER MANAGEMENT EXAMPLES ......................................................................................... 58 IMPORTANT NOTICE ...................................................................................................... 60 ADDRESS ..................................................................................................................................... 60 REVISION HISTORY ........................................................................................................ 61 |
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