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Wolfson has announced a new multi-channel digital-to-analog converter (DAC) that can reduce the cost of DVD players and recorders. The WM8522 and WM8501 offer high performance audio and a built-in 1.7Vrms line driver.

Standard audio DACs output voltages range from 0.7 Vrms to 1Vrms, but this does not meet the higher line voltage requirements of modern consumer electronics. In order to achieve the line voltages required for other consumer electronics devices, an amplifier assembly with a dedicated 12V power supply is typically added. The WM8522 and WM8501 provide the required high voltage output directly from a standard 5V supply, eliminating the need for additional power and filter components, resulting in an average savings of $2.8 per system and significantly reduced board Area.

The WM8522 is a six-channel audio digital-to-analog converter with programmable audio and data interface modes and three independent stereo DAC outputs with faders. The device supports word-length 16-32 bit audio input and supports 8-192 kHz sample rate. For six-channel DVD and 5.1 surround sound systems for home and automotive applications, the WM8522 is an ideal choice. The WM8501 is a two-channel device designed for stereo audio applications that require high voltage output. The device includes a stereo digital-to-analog converter, digital interpolation filter, multi-bit sigma delta modulator, and a serial interface port. The WM8501 supports data input with a word length of 16-24 bits and a sample rate of up to 192 kHz with an optional audio data interface format for the pin.

The WM8522 is available now in volume quantities. It is available in a 28-pin SSOP package and is priced at $1.83 in quantities of 10,000. It is compatible with Wolfson WM8766. The WM8501 is available in a 14-pin SOIC package and is priced at $1.03 in quantities of 10,000.

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