Thin-film Common Mode Filter Designed for DisplayPort

(Product News, 16 Jul 2008)

TDK Corp. has developed a wide-band thin-film common mode filter for EMI suppression on DisplayPort interfaces. The TCM1210U-500-2P measures 1.25x1x0.6mm and is designed specifically to suppress noise on DisplayPort connections, a new standard for signal transmission between computers or AV equipment and display monitors at speeds that exceed even HDMI (2.25Gbps). A DisplayPort link uses up to four lines, each rated for 2.7Gbps, resulting in a total transfer rate of 10.8Gbps. The demand for EMI suppression components in this area is expected to grow significantly in the near future.

The product utilizes TDK's thin-film magnetic head technology (including original fine pattern conductor formation and film formation technologies). With a cutoff frequency of 8GHz, the rating of the new filter is 2GHz higher than that of the existing thin-film common mode filter for HDMI (TCM1210H-900-2P). As a result, the filter offers effective noise control without degrading the outstanding transmission characteristics of high-speed differential transmission line signals.

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