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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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WM8772EFT/R 데이터시트(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8772EFT/R 데이터시트(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 70 page  w WM8772 24-bit, 192kHz 6-Channel Codec with Volume Control WOLFSON MICROELECTRONICS plc w :: www.wolfsonmicro.com Production Data, October 2004, Rev 4.1 Copyright 2004 Wolfson Microelectronics plc DESCRIPTION The WM8772 is a multi-channel audio codec ideal for DVD and surround sound processing applications for home hi-fi, automotive and other audio visual equipment. A stereo 24-bit multi-bit sigma delta ADC is used. Digital audio output word lengths from 16-32 bits and sampling rates from 32kHz to 96kHz are supported. The 32-lead version allows separate ADC and DAC samples rates. Three 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 via a 3 wire serial interface. The interface provides access to all features including channel selection, volume controls, mutes, de-emphasis and power management facilities. The device is available in a 28-pin SSOP or 32 pin TQFP. FEATURES • Audio Performance − 103dB SNR (‘A’ weighted @ 48kHz) DAC − 100dB SNR (‘A’ weighted @ 48kHz) ADC (TQFP) • DAC Sampling Frequency: 8kHz – 192kHz • ADC Sampling Frequency: 32kHz – 96kHz • ADC and DAC can run at different sample rates (32 pin TQFP version only) • 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 • Three 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 or 32 pin TQFP Package APPLICATIONS • DVD Players • Surround Sound AV Processors and Hi-Fi systems • Automotive Audio BLOCK DIAGRAM - 28 PIN SSOP VOUT1L VOUT1R VOUT2L VOUT2R VOUT3L VOUT3R STEREO ADC AUDIO INTERFACE & DIGITAL FILTERS VREFP STEREO DAC STEREO DAC AINL AINR CONTROL INTERFACE WM8772EDS LOW PASS FILTER LOW PASS FILTER LOW PASS FILTER STEREO DAC VREFN W VREFN |
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