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Wolfson Microelectronics Co., Ltd. today introduced the first device in the COL (Lead on Chip) package, the WM8986. The device's small, thin package saves up to 36% of PCB panels for compact portable devices compared to previous generations.The WM8986 DAC (Digital to Analog Converter) is available in a 4x4x0.75 mm COL QFN package that supports a larger chip next to the leads in a smaller package, providing high performance audio playback. The COL packaging process is a relatively new packaging technology that has been successfully applied in particularly small high performance portable audio products.
For audio and video players and portable DAB (digital audio broadcasting) radios and mobile phones, the device features a dual-mode headphone driver that allows users to seamlessly switch between Class A/B and Class D power amplifiers, saving power . A digital core with a PLL (phase-locked loop) operates at 1.8V for additional power savings.
The WM8986 supports up to two differential microphones and analog stereo line inputs for direct mixing with FM radio signals, plus two pairs of headphone drivers, allowing two users to simultaneously use one audio player. Its one built-in PLL supports an input clock of 9 to 27Mhz. The WM8986 also includes a built-in audio signal enhancement DSP (Digital Signal Processing) for wind noise filters, notch filters, 5-band EQ (equalizer) and 3D (3D) stereo.
The WM8986 is available in a 28-pin COL QFN package and is currently sampling. The purchase price is 10,000 and is priced at $1.97 each.
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