Re: [SI-LIST] : Q: Plane-jumping return currents

Mike Jenkins (jenkins@lsil.com)
Tue, 21 Sep 1999 18:21:34 -0700

Eric,

One line of your question, "My system is running pretty fast
(> 1 Gbps)", caught my eye. At that speed, which I assume might
be Fibre Channel or Gigabit Ethernet, you may well be running
differential. (If not, good luck to you.) But if your lines
are dif'l, they carry their own return current. Depending on
geometry, there is some discontinuity, but MUCH less than
single-ended. If your lines are, in fact, differential, and
if you wish me to elaborate, I will.

Regards,
Mike

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