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Recent content by ic98

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    Simulation using an arbitrary input source in Cadence

    I didn't mean you to simulate something to show me Cadence capabilities. I just asked you a question; but I think you're a little aggressive to answer my questions. Anyway, I appreciate your efforts to help me. Yes, in HSPICE, as I pointed in my first post in this thread, we can use a simple...
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    Simulation using an arbitrary input source in Cadence

    Just one more question: if I want to use more than one vpwlf signal source, is it necessary to create separate (two-column) pwlfiles for every vpwlf source in the same directory? or I can use a single file to address the time/magnitude of all the sources!?
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    Simulation using an arbitrary input source in Cadence

    pancho, what do you mean by "absolute path"? when I'm using vpwlf, is it needed to set other options for transient analysis, like time step, maxstep, etc? I mean when someone is using vpwlf, then what the other transient options like those mentioned mean? thanks
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    Simulation using an arbitrary input source in Cadence

    erikl, if you mean "cadence documentation" thru help menu on CIW, when i click on it i get an error says some files are missing or cannot be opened. even when i type cdsdoc on a terminal: command not found. pancho kindly introduced me "vpwlf" source, but I don't know how to set its parameters on...
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    Simulation using an arbitrary input source in Cadence

    OK. thank you anyway, i don't think surfing the internet could be a good idea to learn a software. but I thought experts here could give some advice on how to find a few true tutorial/manuals about Cadence. What a !!! software it is!
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    Simulation using an arbitrary input source in Cadence

    Thanks pancho, so let me ask my question in this way: if there is no manual and no tutorial on how to use Cadence options, then how have you/other people learned these options? I don't know yet how/where to generate this vpwlf file (which directory, what file extension, etc.) and if I want to do...
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    Simulation using an arbitrary input source in Cadence

    Pancho, Thanks, but actually I can't understand what the first two lines are; and I don't know yet how to set this vpwlf file in ADE simulation setup. Could you introduce me at least a manual on this topic? (how to use vpwlf)
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    Simulation using an arbitrary input source in Cadence

    Hey pancho, Could you please explain more how I can set the file name and how I should write the pwl file? (its format) Could you introduce me a manual for using the Cadence tools (or particularly for Virtuoso ADE) like the pdf manual that exists for HSPICE? I mean some stuff by which I can find...
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    Simulation using an arbitrary input source in Cadence

    Hi, I wonder if anyone knows how we can insert an arbitrary input source for simulation in Virtuoso ADE? In HSPICE, we can simply write our time/input vectors (of any length) in a specific ".data" file using, e.g., MATLAB, and then include it for the simulation. I appreciate if you share your...
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    Two stage MOSFET amplifier

    You can find good material on how to design amplifiers in "Razavi, Fundamentals Of Microelectronics"
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    Regarding Low Vth transistors in 180nm CMOS Technology

    be aware that in a standard/twin-well process you can change the threshold voltage of the MOS devices according to bulk-source voltage (especially in short-channel devices).
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    why I have to put AD, AS, PD, PS in H.Spice?

    PD and PS are peripheral of drain and source respectively, not length of those! Spice modern device libraries calculate default AD, AS, PD, and PS according to W, L and process parameters (included in the library). These are defaults, when you have a special layout for the transistors, then AD...
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    Spice models for TSMC CMOS 0.18um

    Look for your needed library in MOSIS Integrated Circuit Fabrication Service
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    [SOLVED] op amp with both positive and negative feedback resistances

    Use the principles of circuit feedback theory from Gray & Meyer's book on "Analysis And Design Of Analog Integrated Circuits"
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    Parastic Capcitance of MOSFET

    what exactly is your question?!
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