Your right I haven't, which 1 did you do?
I am working on one right now. Quite impossible without simulation.
Has anyone ever done it with
"super spice" ?
To be fair, SS is not really designed for circuits that large. It will
simulate them, but its not really up to speed for that size of a job.
However, it has been used extensively for ic building blocks.
For the above larger job I am using Cadence/Spectre.
This thread has nothing to do with chip design.
Its to do with analogue design. IC design is being illustrated to show
just how daft the idea that:
"getting anything usefull from a simulator is usually much harder han
building the circuit and mearuring its performance."
is.
With all due respect to the writer, the writer of that statement has
very limited knowledge of professional analogue design.
No reason why to cant simulate a curcuit after you have it working if
you needed that information but the components with the biggest
variation are semiconductors and iv'e not seem a Monty Carlo test that
included their variables but it's been a while so maybe.
Again, with all due respect, all this shows is that you are quite
ignorant of 10,000s professional analogue designers and the tools such
designers use on a daily basis. Monty carlo and worst case simulations
are de-facto standard to produce a reliable product in short time
scales. Many tools have specific support for these features.
This debate is pretty much futile as its unlikely you will be able to
take your blinkers off and accept what is actually known and done by
10,000s of professional analogue designers. Its 40 hours a week running
sims. That's just the way it is, mate.
Again this thread has nothing to do with chip design.
Its about analogue design, and as such, for anything other than a micky
mouse 2 transister circuit, simulation tools are, in todays market
place, indespensible.
Kevin Aylward B.Sc.
[email protected]
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.
"There are none more ignorant and useless,than they that seek answers
on their knees, with their eyes closed"