[SI-LIST] Re: question about hspice
- From: Zhangkun <zhang_kun@xxxxxxxxxx>
- To: cclewell@xxxxxxxxxxxxxx, si-list <si-list@xxxxxxxxxxxxx>
- 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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