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Wich is the best sofware for electronic simulation?

Discussion in 'CAD' started by dorinelu, Jul 20, 2004.

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  1. dorinelu

    dorinelu Guest

    Wich is the best sofware for electronic simulation?
     
  2. No such thing as "best".

    Download the demos from companies and see which one you like the most.

    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.
     
  3. LT Spice is very highly regarded among the cognoscenti here and it's
    free from those great guys at Linear Technology: www.linear.com

    Multisim, OTOH, has probably the worst cost/benefit ratio and is best
    avoided.
     
  4. Leon Heller

    Leon Heller Guest

    SIMetrix SPICE has a very good reputation, it comes with the Pulsonix
    software I use.

    Leon
     
  5. Chaos Master

    Chaos Master Guest

    cat /etc/passwd | grep dorinelu returns:
    LTSpice.

    []s
     
  6. Chaos Master

    Chaos Master Guest

    cat /etc/passwd | grep Leon Heller returns:
    I second this. I have used SIMetrix Intro, enough for small projects. Very
    good. Just a few problems (it sometimes gave me access violations, if the AVG
    anti-virus was running in the background), *but I think they were caused by my
    PC*.

    []s
     
  7. L2

    L2 Guest

    I have used LTSpice for a few months now and it is quite good (and the
    performance to price ratio is infinite!). It has a good help file and
    there are lots of information, discussions and help available in their
    group (LTSpice at groups.yahoo.com). Of course, the S/W to run Spice
    is just the tip of the iceberg, the biggest problem is to find or
    construct models for what you need, understand them, refine them...
    Regards,
    L2
     
  8. Sourav

    Sourav Guest

    By far, IMHO PSpice is the best.
     
  9. ldg

    ldg Guest

    This is really a large question. There are many analog and digital
    simulators, each optimized for a specific market segment.

    For instance, IC designers have used Hspice or Smartspice for smaller
    circuits where accuracy is really important. This class of simulator
    is analog-only. (There are many others.)
    http://www.silvaco.com/products/circuit_simulation/smartspice.html
    http://www.synopsys.com/products/mixedsignal/hspice/hspice.html


    Full chip simulators are now available that use various schemes to
    reduce simulation time. From what I've seen, these simulators are
    really expensive and beyond my needs. Nanosim is an example:
    http://www.synopsys.com/products/mixedsignal/nanosim/

    There are mixed mode simulators that allow both analog and
    intermediate sized logic circuits to be simulated simultaneously.
    Pspice AD is a good example of this. Since Pspice was bought by Orcad
    and Orcad was bought by Cadence, this simulator has stayed mostly
    targeted at board work, though I've used it in the past for IC design,
    as have others.
    There are many others in this category as well, including SIMetrix
    SPICE. http://www.catena.uk.com/index.html

    Many of these simulators have been created by combining Berkeley
    spice and a digital simulator called Xspice that was created by
    Georgia Tech http://users.ece.gatech.edu/~mrichard/Xspice/

    A high end mixed simulator example might be Cadence's Spectre
    http://www.cadence.com/products/custom_ic/spectre/index.aspx

    Yet another interesting mixed mode simulator is the Smash simulator by
    Dolphin: http://www.dolphin.fr/medal/smash/smash_overview.html . This
    one does vhdl and verilog while simultaneously doing detailed analog
    simulations.


    Saber is sort of in a class by itself in that it can easily simulate
    physical as well as electrical/electronic devices.
    http://www.synopsys.com/products/mixedsignal/saber/saber_ds.html
    It can, for instance, simulate entire car systems where a mechanical
    device operates a sensor, which then is processed by electronics, then
    drives a mechanical actuator. It would also be great for modeling
    MEMs devices since both the physical device and interface circuits can
    be modeled at once. It also does mixed mode. New models are easily
    made using its MAST programming language. Since both Saber and Hspice
    were owned by Avant!, the actual hspice models have been ported to it,
    making it even more acceptable for low level IC design. I used this
    program years ago to design IR focal planes. This is a great
    simulator, but expensive.

    I'm not a user of pure digital simulators, but I'm sure others in this
    group are knowledgeable in this area.

    Many here use the free LTspice simulator. It has a great user
    interface and the support is unusually good. It's primary purpose is
    for board level work, allowing Linear Technology customers to easily
    simulate circuits with Linear Technology devices, though the author's
    intention clearly is beyond this. The user interface is so good I've
    often wished it would front-end for other simulators I use in my work
    (hspice, smartspice). To me, however, the simulator itself doesn't
    quite meet my needs for doing IC design. I'd use it for small
    circuits and board level work.

    Hope any of this helps. Much of this is subjective, and everyone has
    their own opinion.

    Regards,
    Larry
     
  10. I agree entirely. And the free and generous support of the head
    developer on this group - thought it can't of course be taken for
    granted - is another bloody good reason to look no further.
     
  11. This is not really an accurate description. XSpice *is* already the
    combined Berkeley spice with Xtensions that add digital capabilities.
    That is, there is not a separate Georgia Tech digital engine that was
    combined with a separate Berkeley spice. XSpice is not a "digital
    simulator". It is a mixed mode simulater.

    As can any generic spice, so its not.
    This is not specific to Sabre at all. *Any* and all spices have behavial
    modelling, e.g. B sources that allows pretty much any function to be
    implemented. In fact, spices like isspice have full scripting with
    constructs such as if else.
    What aspects are you refering to here? Obviously, I will take this
    opertunity to point out that SuperSpice has quite a few i.c. specific
    hooks directly built in, such as mosfet binning, and automatic worst
    case reruns. I am not aware of any in the "cheap" simulaters that do
    this.

    SS is also set up that it can automatically drive any engine if it can
    run in standard spice batch mode.
    Indeed. Mine is that SuperSpice has the best GUI in the known 3
    universes.

    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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