[SI-LIST] Re: Track Impedance
- From: Mike LaBonte <mike@xxxxxxxxxxx>
- To: viral@xxxxxxxxxxxxxxx
- Date: Thu, 06 Sep 2001 09:23:51 -0400
When you extract the topology in SPECCTRAQuest to send it to Sigxp,
make sure you enable the "Use routed interconnect" option. The
topology will then have exactly the same circuit used in SQ. By
default, the topology will have the estimated parasitics that
support pre-route analysis, even if the routing exists.
Mike LaBonte
Viral wrote:
>
> Hello!! All,
>
> I am doing Signal Integrity Analysis through Specctra Quest and Signal
> Explorer.
>
> Now I have defined the stack and all other details. The problem what
> I am facing is that track impedance given by SPecctra Quest and
> Signal Explorer are different.
>
> In Specctra Quest we can get the parasitic impedance and in signal
> explorer it gives through the topology. Now I wanted to know that
> which one should I consider.
>
> Because depending on this I have to not only simulate my tracks but also if
> needed change the stack so as to bring the impedance in range of
> 50 ohm +/- 10%. So I wanted to confirm as which impedances I should take
> into consideration either of Specctra Quest or SigXplorer.
>
> Thanks in advance.
> Regards,
> Viral
>
> Viral S. Shah
> Sr. Design Engineer,
> Paxonet Communications India Pvt. Ltd.
> (Formerly CoreEl Labs Pvt. Ltd.)
> 620, 6th Floor, 'B' - Wing
> Carlton Towers, Airport Road,
> Bangalore - 560 017.
> India
>
> Tel. No. : 91 - 80 - 5216932/33
> Fax No. : 91 - 80 - 527 2669
> www.paxonet.com
>
> Viral S. Shah
> Sr. Design Engineer,
> Paxonet Communications India Pvt. Ltd.
> (Formerly CoreEl Labs Pvt. Ltd.)
> 620, 6th Floor, 'B' - Wing
> Carlton Towers, Airport Road,
> Bangalore - 560 017.
> India
>
> Tel. No. : 91 - 80 - 5216932/33
> Fax No. : 91 - 80 - 527 2669
> www.paxonet.com
>
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