[SI-LIST] Re: question about hspice
- From: "Guo Yawei" <ywguo527@xxxxxxxxxxx>
- To: zhang_kun@xxxxxxxxxx, cclewell@xxxxxxxxxxxxxx,si-list@xxxxxxxxxxxxx
- Date: Tue, 11 Nov 2003 23:29:12 +0800
Hi,
i_noise node1 gnd ac 1 0 $ This is an AC current source, I
think so.
r_node node1 gnd cell_c
Please try again using pulse or current current source.
************************************************
Yawei Guo
Shanghai MicroScience IC Co., Ltd.
Shanghai, P.R.China
MSN: ywguo527@xxxxxxxxxxx
The poor longs for rich,
the rich longs for heaven,
but the wise longs for peace.
************************************************
>From: Zhangkun <zhang_kun@xxxxxxxxxx>
>Reply-To: zhang_kun@xxxxxxxxxx
>To: cclewell@xxxxxxxxxxxxxx, si-list <si-list@xxxxxxxxxxxxx>
>Subject: [SI-LIST] Re: question about hspice
>Date: Tue, 11 Nov 2003 07:58:07 +0800
>
>Dear Craig
>
>I have found out the mistake in my netlist. It is because I use current
source to check the parameter as following:
>
>i_noise node1 gnd ac 1 0
>r_node node1 gnd cell_c
>
>There should be some limit about current source in Hspice.
>
>Best Regards
>
>Zhangkun
>2003.11.11
>----- Original Message -----
>From: "Clewell, Craig" <cclewell@xxxxxxxxxxxxxx>
>To: <zhang_kun@xxxxxxxxxx>; "si-list" <si-list@xxxxxxxxxxxxx>
>Sent: Monday, November 10, 2003 10:08 PM
>Subject: [SI-LIST] Re: question about hspice
>
>
> > Zhangkun,
> >
> > I don't know if this is a typo, or your a copy of the netlist, but the
first
> > line and last line have different variables. You have eps_nul on the
first
> > line and esp_nul on the last.
> >
> > If you run this code and probe V(1000) you will get a peak amplitude of
> > 1.69E-12 as expected.
> >
> > .param esp_nul=8.85e-12
> > .param cell_x=7.62e-3
> > .param cell_y=10.16e-3
> > .param d=406.4e-6
> >
> > .param cell_c='esp_nul*cell_x*cell_y/d'
> >
> > vin 1000 0 pulse(0 cell_c 0 100e-12)
> > rin1 1000 0 50
> >
> > .tran 5e-12 1e-9
> >
> > .END
> >
> > Regards,
> >
> > Craig
> >
> >
> >
> > -----Original Message-----
> > From: Zhangkun [mailto:zhang_kun@xxxxxxxxxx]
> > Sent: Saturday, November 08, 2003 10:17 PM
> > To: si-list
> > Subject: [SI-LIST] question about hspice
> >
> >
> > Dear all
> > Recently, I meet one problem about hspice. It is described following.
> >
> > .param eps_nul=8.85e-12
> > .param cell_x=7.62e-3
> > .param cell_y=10.16e-3
> > .param d=406.4e-6
> >
> > .param cell_c='esp_nul*cell_x*cell_y/d'
> >
> > In theory, cell_c should be 1.69e-12. But the result of hspice is 10u.
I
> > guess I miss some setting which define the minimum data. Could anybody
tell
> > me how to set the simulation environment?
> >
> > Best Regards
> >
> > Zhangkun
> > 2003.11.09
> >
> >
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