[SI-LIST] Re: EBD model support
- From: Heyfitch <heyfitch@xxxxxxxx>
- To: Hermann Ruckerbauer <hermann.ruckerbauer@xxxxxxxxxxxxx>
- Date: Mon, 29 Mar 2010 10:48:24 -0500
Hello Hermann,
HL v8.0 makes an EBD model of a dual-die package worthless / useless because
it tacitly inserts 20ps 50-Ohm delay between consecutive RLC lumped elements
in side the EBD. This extra delay lines result into much ringing when
viewed at the die.
Mentor says that their next release v8.1 of HL - some time in May? - should
fix this problem. For now you have to hack around it.
Regards,
- Vadim
On Mon, Mar 29, 2010 at 3:39 AM, Hermann Ruckerbauer <
hermann.ruckerbauer@xxxxxxxxxxxxx> wrote:
> Hello Experts,
>
> I would need to decide on model format for a package model. Therefore I
> would need some overview on support from the different simulators.
> It's regarding S-Parameter vs. EBD model.
>
> My personal preference is clearly S-Parameter due to accuracy (Coupling
> and frequency dependence).
> My guess is that all simluators "talk" S-Parameters.
> ==> Does anybody know a simulator that doesn't ?
>
> On EBD models I'm not sure on simulator support. I know that HyperLynx
> is able to generate EBD models out of a package substrate Layout, so I
> guess HyperLynx can also use this model for simulation.
> I think even when supporting IBIS 4.x it is not sure that the simulators
> support all Features of the corresponding IBIS definition.
> ==> I would appreciate any response mentioning the support of EBD models
> in different simulators!
>
> Thanks and regards
>
> Hermann
>
>
> EKH - EyeKnowHow
> Hermann Ruckerbauer
> www.EyeKnowHow.de
> Hermann.Ruckerbauer@xxxxxxxxxxxxx
> Veilchenstrasse 1
> 94554 Moos
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>
>
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