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Error in Running the simulation

Upendra Ch

I am designing a delta-sigma modulator in which when I am running a standalone integrator and Flash ADC, it runs perfectly fine even though it shows warnings. Now when I am connecting the both and running the simulation, its shows an error and the simulation terminates. Iam attaching the error log with this query

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  • Dear Upendra Ch,

    Upendra Ch said:
    Now when I am connecting the both and running the simulation, its shows an error and the simulation terminates. Iam attaching the error log with this query

    I think you need to consider including more information to help anyone interested in providing some relevant suggestions. For example, I did not see the version of the Cadence tools you are using, nor did I find your simulation settings. I tried to view your schematic, which is helpful, but the resolution is poor and I could not make out the intervening components between your integrators.

    Nevertheless, when I did examine it as closely as I could, I noted that none of your integrators appear to have a ground connection. Is this intended? Missing ground connections can lead to convergence issues. I also could not make out some of the symbols between your integrators and am wondering if the elements I point to in an annotated version of a portion of your Forum post are AC coupling capacitors or multiple instances of voltage sources.

    Shawn

Reply

  • Dear Upendra Ch,

    Upendra Ch said:
    Now when I am connecting the both and running the simulation, its shows an error and the simulation terminates. Iam attaching the error log with this query

    I think you need to consider including more information to help anyone interested in providing some relevant suggestions. For example, I did not see the version of the Cadence tools you are using, nor did I find your simulation settings. I tried to view your schematic, which is helpful, but the resolution is poor and I could not make out the intervening components between your integrators.

    Nevertheless, when I did examine it as closely as I could, I noted that none of your integrators appear to have a ground connection. Is this intended? Missing ground connections can lead to convergence issues. I also could not make out some of the symbols between your integrators and am wondering if the elements I point to in an annotated version of a portion of your Forum post are AC coupling capacitors or multiple instances of voltage sources.

    Shawn

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