WM8946 datasheet(4/175 Pages) WOLFSON

4 / 175 page

WM8946

Production Data

PD, July 2012, Rev 4.3

POWER MANAGEMENT ............................................................................................. 101

THERMAL SHUTDOWN .............................................................................................. 103

POWER ON RESET .................................................................................................... 103

SOFTWARE RESET AND DEVICE ID......................................................................... 105

RECOMMENDED POWER UP / POWER-DOWN SEQUENCES...................... 106

DIGITAL FILTER CHARACTERISTICS ............................................................ 163

ADC FILTER RESPONSE............................................................................................ 164

ADC HIGHPASS FILTER RESPONSE ........................................................................ 165

DAC FILTER RESPONSE............................................................................................ 166

APPLICATIONS INFORMATION ...................................................................... 168

RECOMMENDED EXTERNAL COMPONENTS.......................................................... 168

AUDIO INPUT PATHS.............................................................................................................................168

HEADPHONE / LINE OUTPUT PATHS ..................................................................................................168

BTL SPEAKER OUTPUT CONNECTION ...............................................................................................169

POWER SUPPLY DECOUPLING ...........................................................................................................169

MICROPHONE BIAS CIRCUIT ...............................................................................................................170

VIDEO BUFFER COMPONENTS............................................................................................................171

RECOMMENDED EXTERNAL COMPONENTS DIAGRAM....................................................................172

PCB LAYOUT CONSIDERATIONS ............................................................................. 172

PACKAGE DIMENSIONS.................................................................................. 173

IMPORTANT NOTICE ....................................................................................... 174

ADDRESS: ................................................................................................................... 174

REVISION HISTORY ......................................................................................... 175

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