[SI-LIST] Ferrite Beads on Differential Signal Lines?

  • From: Craig Francis <clfranci@xxxxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Thu, 11 Sep 2014 16:11:09 -0700

SI-List,
I haven't seen any literature concerning using ferrite beads on each signal
line of a differential pair.
Usually only a common-mode choke is used to reduce common-mode EMI.

Can ferrite beads be used on a differential pair to increase the the rise
time of the signal and reduce unnecessary high-frequency content that may
radiate?

The two ferrite beads would be sized to allow the bandwidth necessary for
the differential signal's highest data rate.


Thanks,
Craig Francis


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