This Science News Wire page contains a press release issued by an organization and is provided to you "as is" with little or no review from Science X staff.

NXP common mode filter delivers breakthrough performance in EMI filtering and ESD protection

May 12th, 2014

NXP Semiconductors today announced the availability of a new family of Common Mode Filters (CMF) with integrated ESD protection for high-speed MIPI D-PHY and HDMI interfaces. Offering industry-leading bandwidth for Common Mode suppression as well as strong system-level ESD protection, the PCMF2DFN1 (for two differential line pairs) and the PCMF3DFN1 (for three line pairs) outperform all other silicon or ceramic-based solutions currently on the market. The PCMF family comes in small and thin DFN packages with a maximum height of 0.5 mm and an industry standard footprint, supporting the compact and slim designs of today's smartphones, tablets and other portable devices.

Wide-band suppression of Common Mode noise

The PCMF series offers a typical Common Mode rejection of more than 12 dB in the band between 300 MHz and 8 GHz. 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 products help to accelerate time-to-market due to their simplified 'out-of-the-box' design. The wide bandwidth supported by the PCMF series means that manufacturers, no longer have to spend time trying different narrow-band filters in order to find the right solution. PCMF-series offers industry leading bandwidth for common mode suppression covering all typical data rates and their higher harmonics.

Superior differential signal integrity

With a differential pass-band covering more than 2 GHz, the PCMF series supports all MIPI D-PHY data rates up to 1.5 Gbit/s, and even passes the HDMI eye diagram requirement at 3.4 Gbit/s, as verified by the independent Authorized Testing Center in Caen.

Deep snapback, low dynamic resistance for high system-level ESD protection

ESD pulses can couple to data lines – even in closed cases through gaps, such as the camera fitting in mobile phones or tablets. To address this, the PCMF series features ESD protection with NXP's industry-proven deep-snapback technology. Protection devices with deep-snapback technology show a negative dynamic resistance when triggered by an ESD event. In addition, the value for the dynamic resistance after the snapback is the lowest available for common mode filters with ESD-protection. This combination ensures the best possible protection of sensitive System on Chips.

Key Features of PCMF2DFN1 and PCMF3DFN1

Industry-leading bandwidth of Common Mode rejection
Superior differential signal integrity, passes the HDMI eye diagram requirement at 3.4 Gbit/s
Industry-leading system-level ESD protection due to deep-snapback and low dynamic resistance
Package with 0.5 mm maximum thickness, using an industry-standard footprint

Provided by NXP

Citation: NXP common mode filter delivers breakthrough performance in EMI filtering and ESD protection (2014, May 12) retrieved 22 March 2025 from https://sciencex.com/wire-news/161338471/nxp-common-mode-filter-delivers-breakthrough-performance-in-emi.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.