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

Mike:
Does this mean we can't be friends?

Oh well, let me assure you that your hot-headed
personality will not prevent me from singing the
praises of LTspice once someone can show me some
facts like solution time, convergence success and
conformance to real-world board results.  Since
those results depend on the models I hope you can
convince somebody at LT to post A to D converter
models.  I sure don't see them on the website.
So when I wrote:
>>That may be why National does not release A to D converter SPICE
>> models.
maybe analog's comment:
>Or maybe they are a bunch of hacks who should swallow their pride
>and sign up for an LTspice seminar.  :)
Should be taken by LT IC designers as well.  But if you
won't let me go to the seminar then I will
be a hack forever.  Sigh.

And stop being so damn sensitive.  If you think I
am hard on Swanson you should hear what I have to
say about Halla.  And I don't work directly for
National anyway, I contract there.  (But I do drink
beer with LT people so that should count for
something.)

Look, all I am trying to say is that board level
SPICE is far less useful to system-level designers
("just apps guys" in your parlance) then it is
to IC designers.  I am not trying to be like my
pal Pease that says SPICE is useless.  I am not
as smart as Bob and I need SPICE to calculate
closely spaced poles and to do worse-case tolerance
stackups on passive attenuator networks.  But
kids who expect it to successfully predict the
performance of a complex signal chains are delusional.
When temperature effects and part corner-cases come
into play then counting on SPICE is really absurd
(board-level).  Here is where I do agree with Bob:
A computer program, no matter how big and fancy
cannot replace human judgment and experience.

Hey Mike, I got a 64Mbyte USB stick at Arrowfest
from ST microcontrollers.  Will you let me come
to the seminar if give it to you?  Please?  I
was just kidding about the Nixon mask. Sigh.

Paul



Mike Engelhardt wrote: 
Paul,


...it's not very hard to understand why LTspice runs
faster and is more accurate then other/earlier SPICE
engines.  I occasionally give 4hr seminars that explain
in some detail what one needs to do to make a better
SPICE engine[...]in the seminar, I demonstrate the
fantastically improved accuracy of the core LTspice
solvers and the corresponding improvements in simulation
speed with live simulation runs.  Anyway those with
legitimate interest in LTspice can contact your local
LTC office and request when/where the next seminars
will be.


Well if you will have a garbage-posting dishonest creep
like me to your four-hour seminar I feel the least I can
do is attend.  I'll talk to Gary Sapia in the local
sales office about the seminar.  Thanks for the invite.
Look for the guy in the back row wearing a Nixon mask.



No, you misunderstood that as an invite.  You have no
legitimate interest in LTspice.  You are just an analog
applications guy working on Webench for National Sem.
and a liar posting garbage about me, LTspice and Linear's
beloved CEO emeritus.  IC companies target LTspice
all the time, you're just another source of misleading
and dishonest comments.  Please be hereby advised, you
are not permitted to attend any LTspice seminar.

--Mike 


.

Quantcast