Hspice to Spice conversion?

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Jean-Marc Delaplace - 23 Jan 2008 20:14 GMT

Hi,
I have a TINA simulator. It requires PSPICE models for import. Fairchild
only supplies HSPICE models, which cannot be read by TINA. Is there a
way of converting to PSPICE?
The other way round would be to find the models I need readily available
in PSPICE. Namely, I need models for analog switchs, single voltage,
SPDT, very low capacitance. Any idea?
Jean-Marc

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Jim Thompson - 23 Jan 2008 21:18 GMT

>Hi,
>I have a TINA simulator. It requires PSPICE models for import. Fairchild
[quoted text clipped - 4 lines]
>SPDT, very low capacitance. Any idea?
>Jean-Marc

Right now you have to do it manually...

http://analog-innovations.com/HSpice2PSpiceNewEdit.pdf

The executable that was provided by Cadence was "less than robust" ;-)

...Jim Thompson

America: Land of the Free, Because of the Brave

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Helmut Sennewald - 23 Jan 2008 21:31 GMT

> Hi,
> I have a TINA simulator. It requires PSPICE models for import. Fairchild
[quoted text clipped - 4 lines]
> very low capacitance. Any idea?
> Jean-Marc

Hello Jean-Marc,

Many HSPICE models are encrypted.
In this case there is no chance for any other simulator.

Can you show one model to see whether it's encrypted or not?

Best regards,
Helmut

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Jean-Marc Delaplace - 24 Jan 2008 07:24 GMT

Helmut Sennewald a écrit :

>> Hi,
>> I have a TINA simulator. It requires PSPICE models for import. Fairchild
[quoted text clipped - 14 lines]
> Best regards,
> Helmut

Here is one :
(see attachment)

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Helmut Sennewald - 24 Jan 2008 07:51 GMT

> Helmut Sennewald a écrit :
>>> Hi,
[quoted text clipped - 20 lines]
> Here is one :
> (see attachment)

Hello Jean-Marc,

It's an encrypted model. (.prot FEELIB)
They simply used the real circuit model of the chip
with all the MOSFETs and encrypted it.
The drawback is that only users with HSPICE can
use these models because of the necessary but
secret decryption. HSPICE is a 10k$+ simulator.
These encrypted HSPICE models are useless for most
of their customers due to the lack of HSPICE licenses.

Best regards,
Helmut

> .SUBCKT SN74LVC1G3157__DIE B2 CGND B1 A CVCC S
> .prot FREELIB
[quoted text clipped - 3 lines]
> ...
> .ends

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sycochkn - 24 Jan 2008 00:48 GMT

> Hi,
> I have a TINA simulator. It requires PSPICE models for import. Fairchild
[quoted text clipped - 4 lines]
> very low capacitance. Any idea?
> Jean-Marc

If TI makes the part they usually have TINA models.

Bob

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Jim Thompson - 24 Jan 2008 01:06 GMT

>> Hi,
>> I have a TINA simulator. It requires PSPICE models for import. Fairchild
[quoted text clipped - 8 lines]
>
>Bob

There is no such thing as a TINA-specific model, likewise there are no
PSpice-specific models.

However there ARE HSpice-specific models, cooked up just so they can
be ass-holes... usually just some excess bull-sh.t 3rd order
parameters that can be ignored ;-)

From experience I know that PSpice and LTspice can match the most
expensive simulators, no sweat, AND perform much faster.

TINA, used by one of my clients, seems limited in performance... and
doesn't often match my results accurately.

...Jim Thompson

America: Land of the Free, Because of the Brave

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Electronics Forum / CAD / January 2008

Hspice to Spice conversion?