[SI-LIST] AW: Trace simulation
- From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
- To: "bryan@xxxxxxxxxxxxxx" <bryan@xxxxxxxxxxxxxx>, "si-list (si-list@xxxxxxxxxxxxx)" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 24 Nov 2014 08:20:05 +0000
Treating them as GND would only give realistic results when you couple the
Planes to the right Reference. The quality of the coupling (placement of the
caps, via, solderpads...) will then dictate the performance.
Your Set-up is like routing over split planes if you don't couple. In a 3D
simulator you could simulate leaving the Planes floating, but then you have to
carefully watch the outer boundary and overall Model Size as it has a big
influence on the performance.
BR
Gert
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-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von Bryan Ackerly
Gesendet: Montag, 24. November 2014 01:09
An: si-list (si-list@xxxxxxxxxxxxx)
Betreff: [SI-LIST] Trace simulation
I have a fairly basic question about trace simulation.
How do you model a trace that is sandwiched between two 3V3 planes but is
driven from logic supplied by another plane (1V8 for example)?
For simulation is it realistic to treat the 3V3 plane as Ground? Especially if
the 3V3 plane is fairly close to an adjacent ground plane?
Regards,
Bryan Ackerly.
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