EDINBURGH, Scotland -- Wolfson Microelectronics Ltd. here today announced a single-chip digital-to-analog converter (DAC) that integrates all the functions needed for audio processing in digital TVs and set-top boxes.
The company said the WM8722 stereo DAC chip allows users to control input audio source selection, output audio source selection, routing, and signal levels. It also generates on-chip audible warnings.
WM8722 supports data input word lengths from 16-to-24 bits and sampling rates up to 96 kHz. The converter chip consists of a serial interface port, digital interpolation filter, multi-bit sigma delta modulator and stereo DAC in a 20-pin SSOP package. The programmable audio data input port supports a variety of glueless interfaces to widely used digital signal processors (DSPs), audio decoders and receivers conforming to the Sony/Philips Digital Interface (S/PDIF) and Audio Engineering Society (AES)/European Broadcasting Union (EBU) standards.
The DAC operates from a single +3-to-5-volt power supply. Samples are available now with mass production slated to start in October. In quantities of 10,000, the WM8722 will sell for $2.06 each, Wolfson said.