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Hspice replacement for Switch from AnalogLib

circuitmonkey

Hello ,

I was using switch component from AnalogLib  in Spectre  (open voltage=0, closed voltage =1 , Open Switch Resistance=1G and Close switch resistance = 1) and I have recently developing a test circuit in Hspice .  Is there any component or subcircuit /macro model in hspice  which can replace switch I used in spectre . I tried VCRES but it does not seems to work.

Any help will be really appreciated .

Thanks

  • Andrew Beckett

    There is no analogLib equivalent of switch (which is a relay in spectre) for the hspiceD interface. The best option would appear to be the vcres component - what doesn't work about it? How have you got it configured?

    Regards,

    Andrew.

  • circuitmonkey
    in reply to Andrew Beckett

    Hi Andrew,

    Thanks for quick reply.

    I tried using VCRES to make equivalent to switch. I used following setup

    Volt/res conversion factor = 100M

    Max output resistance =10G

    Minimum output resistance =0

    Rest of parameters were left  blank.

    My control voltage is changing from 0 to 1V 

  • Andrew Beckett
    in reply to circuitmonkey

    What does the resulting netlist look like (the line for this vcres component)? I probably can't test it with HSPICE (you may need to ask Synopsys instead of asking here), but at least I can check whether the netlist line looks reasonable...

    Thanks,

    Andrew

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