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

  • From: steve weir <weirsi@xxxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Thu, 11 Sep 2014 17:34:14 -0700

Mode conversion is not a happy thing.

Steve
On 9/11/2014 4:11 PM, Craig Francis wrote:
> 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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