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WM8768EDS/R Datasheet(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8768EDS/R Datasheet(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 38 page  w WM8768 24-bit, 192kHz 8-Channel DAC WOLFSON MICROELECTRONICS plc w :: www.wolfsonmicro.com Production Data, March 2005, Rev 4.1 Copyright 2005 Wolfson Microelectronics plc DESCRIPTION The WM8768 is a multi-channel audio DAC ideal for DVD and surround sound processing applications for home hi-fi, automotive and other audio visual equipment. Four stereo 24-bit multi-bit sigma delta DACs are used with oversampling digital interpolation filters. Digital audio input word lengths from 16-32 bits and sampling rates from 8kHz to 192kHz are supported. Each DAC channel has independent digital volume and mute control. The audio data interface supports I 2S, left justified, right justified and DSP digital audio formats. The device is controlled either via a 3 wire serial interface or directly using the hardware interface. These interfaces provide access to features including channel selection, volume controls, mutes, de-emphasis and power management facilities. The device is available in a 28-pin SSOP. FEATURES • 8-Channel DAC with PCM. • Audio Performance − 103dB SNR (‘A’ weighted @ 48kHz) DAC • DAC Sampling Frequency: 8kHz – 192kHz • 3-Wire SPI Serial or Hardware Control Interface • Programmable Audio Data Interface Modes − I 2S, Left, Right Justified or DSP − 16/20/24/32 bit Word Lengths • Four Independent stereo DAC outputs with independent digital volume controls • Master or Slave Audio Data Interface • 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation • 28 pin SSOP Package APPLICATIONS • DVD Players • Surround Sound AV Processors and Hi-Fi systems • Automotive Audio BLOCK DIAGRAM VOUT1L VOUT1R VOUT2L VOUT2R VOUT3L VOUT3R DIGITAL AUDIO INTERFACE & DIGITAL FILTERS VREFP STEREO DAC STEREO DAC CONTROL INTERFACE WM8768 LOW PASS FILTER LOW PASS FILTER LOW PASS FILTER STEREO DAC VREFN W BCLK LRCLK DIN3 DIN2 DIN1 MCLK DIN4 VOUT4L VOUT4R STEREO DAC LOW PASS FILTER |
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