Wolfson Microelectronics plc: Products : ADCs

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WM8775

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Stereo ADC with 4 input selector
FEATURES Audio Performance 102dB SNR (’A’ weighted at 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 I²S, 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	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 I²S, 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-pin SSOP package. The WM8775 is software compatible with the WM8776.

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DATA SHEET
WM8775 Rev 4.3 (466 k )

RELATED PRODUCTS
WM8778
WM8776

EVALUATION BOARDS
WM8775EV1M

APPLICATION NOTES

A.C. Coupling Capacitor Selection

WM8775/6/8 - Two Wire Interface External Configuration

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