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Spread Spectrum IC Reduces EMI in USB Applications

April 5, 2008 Interference Technology Filters / Ferrites, Products, Shielding, Technologies

A USB 2.0 Peak EMI Reduction IC from PulseCore Semiconductor uses spread spectrum technology to achieve compliance in USB applications. The PCS3P73U00A is based on patent-pending technology and is said to simplify EMI reduction while reducing or eliminating the need for expensive metal shielding, ferrite beads, conductive paint, or filtering networks.

Spread spectrum clocking was thought to be impossible in USB devices because of the exceptionally tight timing and frequency domain limits imposed by USB compliance standards and tests. This new IC has been designed to overcome these obstacles through extremely fine spread spectrum granularity and control. The PCS3P73U00A operates from a 3.3-V/2.5-V supply and is available in an 8-pinTSSOP, SOIC, and TDFN.

Learn more about this new IC at the PulseCore website.

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