Bummer :( Fairchild offers some on-line tools for selecting and testing mosfet (and some other stuff as well). Problem is, it's not my circuit and does not show what I am looking for. I'm interested in THD performance of my entire circuit - something they can't provide. I don't have the personal resources (or time) to build up a circuit, or circuits, for every device that is on my 'possible fit' list. That's where the simulators shine, in this case. Without the model, I won't purchase the part - it's that simple.
Anyway, I posed the question to Fairchild. If they reply favorably, I'll post the answer here. gene ----- Original Message ----- From: Stuart Brorson Date: Friday, April 25, 2008 9:49 am Subject: Re: gEDA-user: encrytped models on gnucap or ngspice To: gEDA user mailing list > > Can either of these simulators handle an encrytped model? �I have > >some from fairchild that are hspice format, using ".prot > FREELIB" , > >which is encrypted. > > The short answer is no. > > To expound on this answer, if the HSpice folks were to release details > about their encryption algorithm, then we could implement > reading of > encrypted models in ngspice/gnucap. However, then you'd have no > incentive to pay $$$ to purchase HSpice. Therefore, I doubt > that the > owners of HSpice (is it Cadence these days?) will every release the > details of their encryption. > > What you could do is approach Fairchild and ask them for an > unencrypted version of their model. They have no reason to disappoint > a customer simply to keep the HSpice encryption algorthm sekrit, so > unless they have a reason to hide their own IP in their model, I don't > see why they would want to keep it encrypted. > > Stuart<div
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