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The Designer's Guide Community Forum › Simulators › Circuit Simulators › Convert Hspice Level 49 Models into Spectre Models

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Convert Hspice Level 49 Models into Spectre Models (Read 2603 times)

essam Junior Member Offline Posts: 15	Convert Hspice Level 49 Models into Spectre Models Oct 16^th, 2008, 10:15am Hi All, I am working on a Switched Capacitor Filter Project. The Professor provided Hspice and TI Spice models only. I want to use Spectre Simulator. Spetre did not recognize the provided Level 49 Hspice models. Is there a systematic way of conerting Hspice models into Spectre Models? Thanks, Essam
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Geoffrey_Coram Senior Fellow Offline Posts: 1999 Massachusetts, USA	Re: Convert Hspice Level 49 Models into Spectre Models Reply #1 - Oct 16^th, 2008, 11:53am The latest version of Spectre should accept hspice models, you shouldn't even need a simulator lang=hspice statement if it's a .mod or .sp file. What version of Spectre are you running? level=49 is bsim3, so .model nch nmos level=49 ... should be the same as model nch bsim3v3 type=n ...
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essam

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Re: Convert Hspice Level 49 Models into Spectre Models
Reply #2 - Oct 16^th, 2008, 1:19pm

Hi,
Thanks for your reply.

I am not sure what version of spectre do we have, and honestly I do not know how to check that.

I attached the model file

Here is the rror message I am getting from Spectre.

Error found by spectre during circuit read-in.
� �"/net/core/export/home/ee/001/e/esa061000/Courses/Fall08/hspice_models/HModel5V
1um.txt"
� � � �121: For .model `nch' of type `nmos', the value of level=49 is not
� � � �supported.
� �"/net/core/export/home/ee/001/e/esa061000/Courses/Fall08/hspice_models/HModel5V
1um.txt"
� � � �237: For .model `pch' of type `pmos', the value of level=49 is not
� � � �supported.
� �"/net/core/export/home/ee/001/e/esa061000/Courses/Fall08/hspice_models/HModel5V
1um.txt"
� � � �352: For .model `nat' of type `nmos', the value of level=49 is not
� � � �supported.

spectre terminated prematurely due to fatal error.

Thanks!

Essam

model.zip

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Geoffrey_Coram Senior Fellow Offline Posts: 1999 Massachusetts, USA	Re: Convert Hspice Level 49 Models into Spectre Models Reply #3 - Oct 16^th, 2008, 1:52pm essam wrote on Oct 16^th, 2008, 1:19pm: I am not sure what version of spectre do we have, and honestly I do not know how to check that. It should tell you at the top of the output; you can also do spectre -W I'm pretty sure you're using a rather old version.
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essam Junior Member Offline Posts: 15	Re: Convert Hspice Level 49 Models into Spectre Models Reply #4 - Oct 16^th, 2008, 1:57pm I found it: it is spectre er 5.0.33.070605 Thanks, Essam
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Geoffrey_Coram Senior Fellow Offline Posts: 1999 Massachusetts, USA	Re: Convert Hspice Level 49 Models into Spectre Models Reply #5 - Oct 16^th, 2008, 2:06pm Copy the file and change .MODEL NCH NMOS + LEVEL = 49 to model nch bsim3v3 type=n (and type=p for PCH)
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essam Junior Member Offline Posts: 15	Re: Convert Hspice Level 49 Models into Spectre Models Reply #6 - Oct 16^th, 2008, 2:13pm I am getting exactly the same error message, after the changes you told
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Geoffrey_Coram Senior Fellow Offline Posts: 1999 Massachusetts, USA	Re: Convert Hspice Level 49 Models into Spectre Models Reply #7 - Oct 17^th, 2008, 7:20am I meant for you to replace 2 lines with one; if you took out the LEVEL=49 line, then you shouldn't be getting the same error message.
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essam Junior Member Offline Posts: 15	Re: Convert Hspice Level 49 Models into Spectre Models Reply #8 - Oct 17^th, 2008, 7:40am That's what I have done but it did not work!! Essam
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essam Junior Member Offline Posts: 15	Re: Convert Hspice Level 49 Models into Spectre Models Reply #9 - Oct 17^th, 2008, 1:53pm It seems that it reads and interprets the model parameters somehow and based on that say it is Level 49
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essam Junior Member Offline Posts: 15	Re: Convert Hspice Level 49 Models into Spectre Models (SOLUTION FOUND) Reply #10 - Oct 18^th, 2008, 7:15am HI, I FOUND THE SOLUTION Leave the model statement as is: .Model nch nmos But remove two lines: +LEVEL = 49 +VERSION = 3.1 the simulator now runs but I need to check it versus hspice simulation to guarantee that the models are read without problems :)
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Andrew Beckett

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Life, don't talk to
me about Life...

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Bracknell, UK

Re: Convert Hspice Level 49 Models into Spectre Models
Reply #11 - Jan 2^nd, 2009, 3:27pm

Bit of a late response, but using spectre from a release in 2003 is probably not the wisest choice... there have been many, many improvements since then, including far better SPICE syntax and SPICE/HSPICE model compatibility. Using an MMSIM70 version of spectre would make far more sense.

Regards,

Andrew.

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