Audio DACs cut system cost in DVD players, recorders

Edinburgh, UK&#8212Eliminating the 12-volt supply that would normally be required for its high-voltage line drivers, Wolfson Microelectronics says its WM8522 and WM8501 multi-channel DACs, for the cost-competitive DVD player and recorder market, will save $2.80 per system.

The WM8522 (six channel device) and WM8501 (two channels) integrate 1.7 VRMS line drivers to accommodate the requirements of today's consumer electronics equipment; standard audio DACs field 0.7-1 VRMS applications. The WM8522 and the WM8501 provide the high voltage output using a standard 5-volt supply line, versus the dedicated 12-volt supply that would normally be required to update traditional designs. The resulting cost savings amounts to an average of $2.80 per system, according to the company, and dramatically reduces real-estate requirements.

The WM8522 includes programmable audio and data interface modes and three independent stereo DAC outputs having independent volume controls. The device supports audio input word lengths of 16 to 32 bits and sampling rates from 8 to 192 kHz. It's suited for six-channel DVD and 5.1 surround sound systems in both home and automotive applications.

The WM8501 is designed for stereo audio applications that require a high voltage output. The device comprises a stereo DAC, digital interpolation filters, multi-bit sigma delta modulators and a serial interface port. The WM8501 supports data input word lengths from 16 to 24 bits with sampling rates to 192 kHz. It has a pin-selectable audio data interface format.

Click here to access the WM8522 datasheet and here for the WM8501. The WM8522, in a 28-pin SSOP package, is priced at $1.83 each in 10k quantities. The WM8501, in a 14-pin SOIC, is priced at $1.03.

Wolfson Microelectronics , 1-858-676-5090

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