WM8501 w 24-bit 192kHz Stereo DAC with 1.7Vrms Line Driver DESCRIPTION FEATURES Stereo DAC with 1.7Vrms line driver from 5V analogue The WM8501 is a high performance stereo DAC with an supply integrated 1.7Vrms line driver. It is designed for audio applications that require a high voltage output along with Audio performance enhanced load drive capability. - 100dB SNR (A weighted 48kHz) - -88dB THD The WM8501 supports data input word lengths from 16 to 24-bits and sampling rates up to 192kHz. The WM8501 DAC Sampling Frequency: 8kHz 192kHz consists of a serial interface port, digital interpolation filters, Pin Selectable Audio Data Interface Format 2 multi-bit sigma delta modulators and stereo DAC in a 14- - I S, 16-bit Right Justified or DSP lead SOIC package. 14-lead SOIC package The hardware control interface is used for the selection of 4.5V - 5.5V analogue, 2.7V - 5.5V digital supply operation audio data interface format, enable and de-emphasis. The 2 WM8501 supports I S, right Justified or DSP interfaces. APPLICATIONS Operating on separate analog and digital supplies the STB WM8501 offers very lower power consumption from the DVD digital section, whilst supporting enhanced load drive from Digital TV the analogue output. BLOCK DIAGRAM WOLFSON MICROELECTRONICS plc Production Data, February 2013, Rev 4.3 Copyright 2013 Wolfson Microelectronics plc WM8501 Production Data 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 OPERATING CONDITIONS .......................................................... 5 ELECTRICAL CHARACTERISTICS .......................................................................... 6 MASTER CLOCK TIMING ..................................................................................................... 7 DIGITAL AUDIO INTERFACE ............................................................................................... 7 DEVICE DESCRIPTION ............................................................................................. 9 GENERAL INTRODUCTION ................................................................................................. 9 DAC CIRCUIT DESCRIPTION .............................................................................................. 9 CLOCKING SCHEMES ....................................................................................................... 10 DIGITAL AUDIO INTERFACE ............................................................................................. 10 AUDIO DATA SAMPLING RATES ...................................................................................... 12 HARDWARE CONTROL MODES ....................................................................................... 12 DIGITAL FILTER CHARACTERISTICS ................................................................... 14 DAC FILTER RESPONSES ................................................................................................ 14 DIGITAL DE-EMPHASIS CHARACTERISTICS ....................................................... 15 APPLICATIONS INFORMATION ............................................................................. 16 RECOMMENDED EXTERNAL COMPONENTS ................................................................. 16 POWER UP/DOWN SEQUENCE ........................................................................................ 17 RECOMMENDED ANALOGUE LOW PASS FILTER .......................................................... 17 PCB LAYOUT RECOMMENDATIONS ................................................................................ 18 PACKAGE DRAWING .............................................................................................. 19 IMPORTANT NOTICE .............................................................................................. 20 ADDRESS: .......................................................................................................................... 20 PD, Rev 4.3, February 2013 w 2