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Date: 13-05-14

New thin CMF filters from NXP feature higher BW and CMRR

The new family of Common Mode Filters (CMF) with integrated ESD protection from NXP for high-speed MIPI D-PHY and HDMI interfaces offers typical Common Mode rejection of more than 12 dB in the band between 300 MHz and 8 GHz. The PCMF2DFN1 (for two differential line pairs) and the PCMF3DFN1 (for three line pairs) available in small and thin DFN packages with a maximum height of 0.5 mm and an industry standard footprint supporting smartphones, tablets and other portable devices.

NXP says the PCMF2DFN1 and PCMF3DFN1 are the only available devices offering a typical Common Mode rejection of >18 dB for Wi-Fi 4.9-5.8 GHz frequencies, in addition to a typical Common Mode rejection of > 20 dB around the GSM 900 spectrum. The wide bandwidth supported PCMF series saves engineer from trying different narrow-band filters for common mode suppression covering all typical data rates and their higher harmonics.

PCMF series supports all MIPI D-PHY data rates up to 1.5 Gbit/s, and passes the HDMI eye diagram requirement at 3.4 Gbit/s with a differential pass-band covering more than 2 GHz.

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