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How to maintain USB signal integrity when adding ESD protection

Posted: 23 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:USB 2.0? signal integrity? ESD protection?

The USB has become a popular feature of PCs, cellphones and other electronic devices. USB makes data transfer between electronic devices faster and easier. USB 2.0 transfers data at up to 480Mbit/s. At these data rates, any small amount of capacitance added will cause disturbances to the data signals. Designers are left with the challenge of finding ESD protection solutions that can protect these sensitive lines without adding signal degrading capacitance. This document will discuss USB 2.0 and evaluate the importance of low capacitance ESD protection devices with the use of eye diagrams.

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