The WM8728 is a high performance stereo DAC designedfor audio applications such as DVD, home theatre systems,and digital TV. The WM8728 supports PCM data input wordlengths from 16 to 32-bits and sampling rates up to 192kHz.Alternatively the WM8728 can operate in DSD compatiblemode where a 64x bitstream is input for each channel. TheWM8728 consists of a serial interface port, digitalinterpolation filters, multi-bit sigma delta modulators andstereo DAC in a small 20-pin SSOP package. The WM8728also includes a digitally controllable mute and attenuatefunction for each channel.
The WM8728 supports a variety of connection schemes foraudio DAC control. The 2 or 3-wire MPU serial port providesaccess to a wide range of features including on-chip mute,attenuation and phase reversal. A hardware controllableinterface is also available (DSD operation is only possible inhardware mode).
The WM8728 is an ideal device to interface to AC-3,DTS, and MPEG audio decoders for surround soundapplications, or for use in DVD players supporting DVD-A.
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