Re: Wanted: LM-709 (Spice model) National Op-Amp

"Paul Rako" <sp_a_mpa_u_l@xxxxxxxxx> wrote in message
news:%R8Ze.3707$Ba2.1132@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> analog:
> Thank god, a scientist. Coherent, I suppose, with the IEEE mail
> domain.
> I will install LTspice/SwitcherCAD III and replicate some of my Orcad
> misery.


>
> Kevin:
> I have to admit I am a long way from worrying if LTspice/SwitcherCAD
> III
> deals with HSPICE directives. But that did get me to check out your
> website
> and if that SPICE can inter-operate on... oh-- I don't know, EDIF 2 0
> 0
> well that would be pretty cool since I could do work in it and then
> stuff it
> into Orcad or when I get creamed in Orcad I could jump into your
> SPICE.

I am playing with the idea of EDIF.

At my current day job we use Tanner Tools, well for layout anyway. I
personally only use my SS. Tanner cant do any digital except by analogue
means, so it got me into thinking that there is a market for a cheap ic
mixed-mode spice if it can interface better with pro-tools like Cadence.


> As a matter of fact I would pay the price if only so I did not have to
> start Orcad in the evil "Mixed Signal" mode where the part properties
> get
> all goofy because PSPICE likes to call instantians "occurances"
> instead of
> "instances" like Orcad does. Back-annotate into that mess once and
> you might understand why PSPICE is under-used. Arbitrary handles are
> a wonderful thing, please tell Orcad.

I am refining bits an bobs that I use for ic design. I actually missed
direct GUI support for the URC transmission line, i.e. it had to be in a
..subckt to be used. I have now adding a proper dialog set-up for it, but
not yet posted the update. This is really useful to support resisters
with distributed capacitance to a node. This acts differently for the
conventional T lines (LTRA and T).


Kevin Aylward
informationEXTRACT@xxxxxxxxxxxxx
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.


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