WM8778 - Wolfson Microelectronics plc

WM8778 24 BIT 192KHZ STEREO CODEC

The WM8778 is a high performance, stereo audio CODEC. It is ideal for surround sound processing applications for home hi-fi, DVD-RW and other audio visual equipment. The stereo 24-bit multi-bit sigma delta ADC has programmable gain with automatic level control. Digital audio output word lengths from 16-32 bits and sampling rates from 32kHz to 96kHz are suppo.

Features

including volume controls, mutes, and de-emphasis facilities. It can also be controlled in hardware which gives access to the most commonly used features. Control interface selection is done via the MODE pin (trilevel). The device is available in a 28-lead SSOP package. BLOCK DIAGRAM FEATURES
• Audio Performance − 108dB SNR (‘A’ weighted @ 48kHz) DAC − 102dB SNR (‘A’ weighted @ 48kHz) ADC
• DAC Sampling Frequency: 32kHz
  – 192kHz
• ADC Sampling Frequency: 32kHz
  – 96kHz
• Stereo ADC input analogue gain adjust from +24dB to
  –21dB in 0.5dB steps
• ADC digital gain from -21.5dB to -103dB in 0.5dB .