Filters offer high attenuation with no sound quality degradation
Expanding the company's portfolio of EMC components for audio lines, TDK has announced the MAF1005G noise suppression filter measuring just 1.0x 0.5x0.5mm. The miniaturised audio line filter features a high attenuation of cellular bands from 700MHz to 2.5GHz and can suppress the spurious emissions from these bands by up to 50dB.
Moreover, the new filter limits the THD+N of the audio signals to the world’s lowest levels (as of August 2016, according to TDK), just like the MAF1608G, which was introduced in May 2016. As a result, the MAF1005G filters cause no sound quality degradation in audio lines. Thanks to their small size and excellent attenuation performance, they are suitable for noise suppression in audio lines (earphones, speakers, microphones) of devices such as smartphones, tablets and portable game consoles.
Based on an optimised product design that utilises a ferrite material with a low distortion factor, TDK was able to reduce sound quality degradation to a level equal to that of a line without a noise filter. This makes it possible to implement noise protection while still extracting the full performance potential of the audio amplifier. Volume production began in August 2016.
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