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WOLFSON MICROELECTRONICS VOIP SEMICONDUCTOR PROFILE
In November of 2004, Wolfson Microelectronics plc (LSE:WLF) introduced
the WM8510 mono CODEC specifically for the development of VoIP devices and digital telephones. The chip integrates a speaker
driver, two microphone inputs, sigma delta converters with digital decimation and interpolation filters to enable audio at
sampling rates between 8 to 48 ksps. The chip also includes a phase lock loop (PLL), standard audio interface for PCM, I2S,
DSP and other audio formats. A power save mode lets the chip operate at supply voltage levels down to 1.62 volts.
The WM8510 chip was originally introduced at $1.25 in quantities
of 10,000 in a 28 pin SSOP package.
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