Designer’s Guide Community

kokabanga Junior Member Offline Posts: 28	has BSIM4 been incorporated into Cadence yet? Mar 10^th, 2006, 12:12am Hello, I am trying to find out which version of analog artist has the ability to recognize BSIM4 modle files. Does anyone know about this? Thank you very much Naren
Back to top	naren IP Logged

bernd Senior Member Offline Posts: 229 Munich/Germany	Re: has BSIM4 been incorporated into Cadence yet? Reply #1 - Mar 10^th, 2006, 2:09am Find out yourself spectre -W spectre -help bsim4 Bernd
Back to top	Just another lonesome cad guy IP Logged

Geoffrey_Coram Senior Fellow Offline Posts: 1999 Massachusetts, USA	Re: has BSIM4 been incorporated into Cadence yet? Reply #2 - Mar 15^th, 2006, 5:22am BSIM4.2.1 was in Spectre 4.4.6 years ago. If you need a later BSIM4 (Berkeley is on 4.5), you'll need a newer version of Spectre.
Back to top	If at first you do succeed, STOP, raise your standards, and stop wasting your time. IP Logged

kokabanga Junior Member Offline Posts: 28	Re: has BSIM4 been incorporated into Cadence yet? Reply #3 - Mar 15^th, 2006, 11:50pm I think the version of SpectreRF is 4.4.6. I typed in "spectre -W" and I get "sub-version 4.4.6.061301" "spectre -help bsim4" gives "No such analysis, device etc etc.....".......there is no Bsim4...highest is bsim v3.3.2. please help.
Back to top	naren IP Logged

bernd

Senior Member

Offline

Posts: 229
Munich/Germany

Re: has BSIM4 been incorporated into Cadence yet?
Reply #4 - Mar 16^th, 2006, 1:11am

sub-version 4.4.6.061301 is equal to Cadence DFII 4.4.6 QSR2
and it is pretty old (June 2001) and you're right bism4 is not supported in this
release.

Can you update? The higher version the better it would be.
If you are on a University program and you don't have access to
the latest DFII version, you should update at least to
Cadence DFII 4.4.6 MSR10 == sub-version 4.4.6.031103 (March 2003).
This version supports bsim4 version 2.1, which is not the newest, but
might help you.

Bernd

Back to top

Just another lonesome cad guy

IP Logged

kokabanga

Junior Member

Offline

Posts: 28

Re: has BSIM4 been incorporated into Cadence yet?
Reply #5 - Mar 16^th, 2006, 9:25pm

I am trying to find out how an LNA using a 65nm process works.

I have the model files for such nm process from

http://rfic.eecs.berkeley.edu/~niknejad/ee142/pdf/models65.lib

However, I do not have the required version of spectre to try these out.

I am unable to upgrade either!

guess I am handicapped eh!

Back to top

naren

IP Logged

Geoffrey_Coram

Senior Fellow

Offline

Posts: 1999
Massachusetts, USA

Re: has BSIM4 been incorporated into Cadence yet?
Reply #6 - Mar 17^th, 2006, 5:15am

That's an odd set of models -- no STI stress parameters, no well-proximity effect, ... and the version is 4.0.

I don't think this really corresponds particularly well to an actual 65nm process. Do you have a netlist built for this specific model library? If not, the LNA is probably not biased correctly because it will have been designed using other models. Are you trying to understand how a generic LNA works? In which case you should look for bsim3 models for an older technology.

Back to top

If at first you do succeed, STOP, raise your standards, and stop wasting your time.

IP Logged