DESCRIPTION
The WM8774 is a high performance, stereo audio codec with an 8 channel input selector. The WM8774 is ideal 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 an eight stereo channel input selector. Each channel has analogue domain mute and programmable gain control. Digital audio output word lengths from 16-32 bits and sampling rates from 8kHz to 96kHz are supported.

FEATURES
• Audio Performance
    − 106dB SNR (‘A’ weighted @ 48kHz) DAC
    − 101dB SNR (‘A’ weighted @ 48kHz) ADC
• DAC Sampling Frequency: 8kHz – 192kHz
• ADC Sampling Frequency: 8kHz – 96kHz
• 3-Wire SPI Compatible 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
• Stereo DAC with independent analogue and digital volume controls
• Analogue Bypass Path Feature
• Selectable AUX input to the volume controls
• Eight stereo ADC inputs with analogue gain adjust from +19dB to –12dB in 1dB steps
• 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation
• 5V tolerant digital inputs

APPLICATIONS
• Surround Sound AV Processors and Hi-Fi systems
• Automotive Audio