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electronic design software?

Discussion in 'Electronic Design' started by mrgizmo, Aug 29, 2003.

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  1. mrgizmo

    mrgizmo Guest

    Which is the most popular? Is there a demo?
     
  2. John Smith

    John Smith Guest


    In my opinion, you should avoid Islandlogix's VisualSpice. Even if it's
    free.

    Good luck in your search.

    John
     
  3. Mike

    Mike Guest

    Depends on what you're doing. I use Mentor Design Architect and Cadence
    Analog Artist for analog schematic entry, and Eldo and Hspice for
    simulation. Together, they'll set you back more than $100k, with
    maintenaince (yearly) on top of that. You can get a demo from the local
    sales office, but I suspect this stuff isn't what you were referring to.

    What is it you want to do?

    -- Mike --
     
  4. All vendors of Spice have demos. The most popular is not nessesarilly
    the best.

    After you've tried my SuperSpice http://www.anasoft.co.uk:-), use google
    and search on analog simulation, spice etc, maan ones are LTSpice, TINA,
    Electronic Workbench, B2 Spice, CircuitMaker.

    Take all vendor waffle with a pinch of salt and see what one you think
    does the job for you.

    Kevin Aylward

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.
     
  5. LT Spice from Linear Technology. Look no further. I'm only sorry I did
    and wasted so much time.
     
  6. Ira Rubinson

    Ira Rubinson Guest

  7. Sounding oldfashioned : what do you guys do with this
    simulation software ? In my 20+ years in the field I never
    had the need for them.
    Mostly a few (+-*/log,exp) operations are sufficient.
    Seldom I write a simulation myself, and rarely an
    application is further useful :
    http://www.ibrtses.com/products/index.html for the story,
    http://www.ibrtses.com/products/teiler22.zip for the app.
    I doubt one the mentioned spice's is able to do that.
    So what do they do ?
    What can they optimize ?

    Rene
     
  8. True. Mainly RF and digital till now though they become analog at
    one point.
    no. mainly numerical plus approaches on how to solve equations
    on an embedded with reduced resources. Which approximation
    with how many digits at what order and such.
    I wouldn't even consider trying to outdo a commercial opamp. I just buy
    them. There are plenty different ones around. Recently also entering
    RF regions, with 3GHz GBW and 150mA current. There is now way to achieve
    a THS3002 or similar with discretes.

    Thanks. That gave a hint.
    I see this software is used to do designs that may or may not be
    integrated as analog chips. I tend to buy generalized approaches as single
    chips then. Also none of my colleagues does something similar. There is not
    that much time for a project over here to go into such depths of analog
    design. We're expected to have quicker solutions.
    Unfortunately the pace is picking up. Every so often a part is becoming
    obsolete. I wouldn't want to spend too much time in parts becoming
    obsolete that quick.

    Rene
     
  9. (!) I'm staggered. Perhaps you're one of these people who actually
    enjoys doing a colossal amount of time-consuming, complicated and
    repetitive calculations. Most folk just want to get on with the design
    itself!
     
  10. ddwyer

    ddwyer Guest

    40 years in the field (sometimes wilderness) and there is an important
    place for modelling.
    And some pitfalls.
    If you have the cash you will probably spend too much time proving that
    a breadboard works something you already knew.
    Models are excellent for tolerancing drawing a schematic and converting
    the schematic to a pcb.
    Models are a bad way to work out the most efficient means to achieve a
    circuit function.
    Large org. where I have recent experience take months to get to a
    breadboard stage that I can achieve in 1 week (often less) .
    Without the mental ability to model; a function may take an fpga and a
    shark processor whereas mixed analog and simple embedded processor will
    take less power , cash, and space.
    Every engineer should have a PC with (LT is free ) Spice a schematic
    capture Mathcad and board layout and router.
    For quick prototypes mill the pcb directly from the PC to PCB material.
     
  11. To the contrary. I was wondering about the need for complex
    programs. Control loops, RC and this sort are done by head,
    Only R-dividers are done with the mentioned program.
    Then there are a few more to solve trivial detail problems.

    Rene
     
  12. Mike

    Mike Guest

    The biggest circuit I've ever built is only 0.2" on a side. LTSpice isn't
    compatible with my models, the schematic capture isn't compatible with the
    tools from Mentor, Cadence, Synopsis, or anyone else, and board layout and
    routing software can't begin to be used to design a chip.

    I do have Mathcad, though, and find that to be very useful.

    -- Mike --
     
  13. Jim Thompson

    Jim Thompson Guest

    My biggest is 0.415" on a side ;-)
    Huh? I'm certain that LTSpice can handle BSIM3v3
    Anything that can write a netlist can interface with IC layout tools.
    Mentor, Cadence and Synopsis just try to make it very difficult. But
    there are now economic tools available that make it a snap.
    PCB routing certainly won't do ICs, but only *digits* use auto-routing
    on ICs ;-)
    Can Mathcad solve any equation that PSpice can't?

    ...Jim Thompson
     
  14. I was beeing a bit flippant here.

    <You point out -
    Oh for the days of kit parts...
    I have done a lot of analogue design without spice in the past, but on
    reflection, although some were difficult, were not, after the fact, that
    complicated. The point here being that today, all the easy things have
    already been done.
    Its not. If it were, we would all have been f'ked long ago:)

    Robert Widlar and Barry
    Actually, they didn't do the above. To my knowledge, I am the first to
    actually have published this result. I did get an email from Bob Pease
    saying he was unaware of this result.

    Best Regards,

    Kevin Aylward

    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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