Selecting Common Mode Filter Chokes for High Speed Data Interfaces

Learn about the benefits of using common mode chokes to eliminate EMI from high speed data interfaces

High speed data interfaces like USB, HDBaseT™, HDMI, DVI, and DisplayPort require careful consideration to ensure reliable communication that is free of disruptive EMI. Of the many tools at the designer’s disposal like trace routing, termination and component placement, the common mode filter choke remains one of the most powerful. This application note discusses the benefits of using common mode chokes and reviews the performance characteristics associated with their proper application. By reading this application note, engineers will learn:

  • How common mode chokes operate
  • About choosing the best common mode choke for your application
  • What tools are available to help simplify your selection


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