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Integrated EMI filter handles high-speed data line apps

Posted: 29 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:EMI filter? ESD protection? date line high-speed?

NUC2401MN EMI filter

ON Semiconductor has introduced what it claims to be first integrated common mode choke and ESD protection IC for high-speed data line applications.

The new NUC2401MN combines high bandwidth differential filtering, solid common mode stop band attenuation and ESD protection. These combined features make this solution better than typical EMI filters and discrete alternatives while helping to significantly lower component count. Enabling designers to achieve superior filtering and protection while realizing space and cost savings and improving overall reliability, it is suitable for a wide variety of applications based on high-speed differential data lines including USB 2.0, IEEE1394, LVDS, MIPI and MDDI.

"ON Semiconductor has established a reputation as a leading provider in high performance EMI filter products and the NUC2401 is our newest product to continue this trend," said Gary Straker, general manager of ON Semiconductor's protection and control product group. "This device is the first of many in a comprehensive portfolio that will help our customers in their efforts to integrate high bandwidth interfaces into handsets that will ultimately be capable of delivering the latest high bandwidth content from cellular service providers."

Integrating the equivalent of five discrete components into a DFN package measuring just 2 mm x 2.2mm, the NUC2401MN combines common mode EMI filtering with ESD protection to 12kV, in accordance with the IEC61000-4-2 industry standard for contact discharge. Machine Model and Human Body Model ESD ratings are 1.6kV and 16kV respectively. The device is rated to MSL 1 and will operate at temperatures from -40C to 85C.

Because the NUC2401MN is an integrated solution, it helps reduce parasitic inductance, resulting in more ideal common mode filtering. The cutoff frequency for common mode noise reduction is 40MHz and typical common mode impedance at 100MHz and 500MHz is 200? and 500#8486; respectively. The device also offers the industry's lowest maximum clamp voltage10V at a peak current of 5Ato ensure superior ESD protection. Maximum peak pulse current rating is 19A.

The NUC2401MN is offered in a compact 2mm x 2.2mm DFN8 package for $0.533 per unit in 10,000 unit quantities.

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