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WM8775 データシート(PDF) 1 Page - Cirrus Logic |
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WM8775 データシート(HTML) 1 Page - Cirrus Logic |
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1 / 39 page  w WM8775 24-bit, 96kHz ADC with 4 Channel I/P Multiplexer WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Production Data, October 2008, Rev 4.4 Copyright ©2008 Wolfson Microelectronics plc DESCRIPTION The WM8775 is a high performance, stereo audio ADC with a 4 channel input mixer. The WM8775 is ideal for digitising multiple analogue sources for 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 with a four stereo channel input selector. Each channel has programmable gain control. Digital audio output word lengths from 16-32 bits and sampling rates from 32kHz to 96kHz are supported. The audio data interface supports I 2S, left justified, right justified and DSP digital audio formats. The device is controlled via a 2 or 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-lead SSOP package. The WM8775 is software compatible with the WM8776. FEATURES • Audio Performance − 102dB SNR (‘A’ weighted @ 48kHz) − -90dB THD • ADC Sampling Frequency: 32kHz – 96kHz • Four stereo ADC inputs with analogue gain adjust from +24dB to –21dB in 0.5dB steps • Digital gain adjust from -21.5dB to -103dB. • Programmable Automatic Level Control (ALC) or Limiter on ADC input • 3-Wire SPI Compatible or 2-wire Serial Control Interface • Master or Slave Clocking Mode • Programmable Audio Data Interface Modes − I 2S, Left, Right Justified or DSP − 16/20/24/32 bit Word Lengths • 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation APPLICATIONS • Surround Sound AV Processors and Hi-Fi systems • Automotive Audio BLOCK DIAGRAM AUDIO INTERFACE AND DIGITAL FILTERS CONTROL INTERFACE W WM8775 ADCLRC BCLK DOUT MCLK STEREO ADC ALC AIN2R AIN3L AIN3R AIN4L AIN4R AINOPR AINOPL AINVGR AINVGL AIN2L AIN1R AIN1L VMID |
同様の部品番号 - WM8775 |
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同様の説明 - WM8775 |
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