WM8729

DESCRIPTION The WM8729 is a high performance stereo DAC designed for audio applications such as DVD, home theatre systems, and digital TV. The WM8729 supports data input word lengths from 16 to 24-bits and sampling rates up to 192kHz. The WM8729 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a small 16-pin SOIC package. The WM8729 has a hardware control interface for selection of audio data interface format and de-emphasis. The WM8729 is an ideal device to interface to AC-3, DTS, and MPEG audio decoders for surround sound applications, or for use in DVD players, including supporting the implementation of 2 channels at 192kHz for high-end DVD-Audio applications. WM8729 24-bit, 192kHz Stereo DAC Product Preview, Rev 1.2, April 2001 FEATURES Stereo DAC Audio Performance - 106dB SNR (‘A’ weighted @ 48kHz) DAC - -97dB THD DAC Sampling Frequency: 8kHz – 192kHz Pin Selectable Audio Data Interface Format - I2S or Right Justified 3.0V - 5.5V Supply Operation 16-pin SOIC Package Exceeds Dolby Class A Performance Requirements APPLICATIONS DVD-Audio and DVD ‘Universal’ Players Home theatre systems Digital TV Digital broadcast receivers BLOCK DIAGRAM FORMAT MUTEB DEM CONTROL INTERFACE WM8729 BCKIN LRCIN DIN SERIAL INTERFACE MUTE MUTE DIGITAL FILTERS SIGMA DELTA MODULATOR SIGMA DELTA MODULATOR RIGHT DAC LOW PASS FILTER VOUTR LEFT DAC LOW PASS FILTER VOUTL MCLK AVDD DVDD VMID V...