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In a ring oscillator circuit, how could i plot the frequency of a certain period of the output?.

Abdhkamal

Hi, i'm working on a modified oscillator circuit that has a clock input (Pulses) and a sinusoidal output.
The operation is as follows: when the clock pulse is "LOW" the output starts the oscillation then a sinusoidal signal outcomes, when the clock pulse is "HIGH" the oscillation stops (as shown in the graph below).
Now, i need to plot the the frequency of the sinusoidal output vs. the input voltage. How could i do so?.
How could i work with just the oscillation part and ignoring the stopping part?.

Thanks,
Abdallah.

Parents

  • Probably this depends on whether there is more than one of these enabled portions of the graph. You could use cross() to determine the time when the enabling signal goes low/high and then use clip() to clip out that portion the curve, and then measure the frequency during that part.

    However, without a better idea of the overall data and objective I'm not sure I could be more specific. Probably best if you contacted customer support so that maybe  you can provide the simulation result database so that an application engineer can take a look and advise.

    Regards,

    Andrew.

Reply

  • Probably this depends on whether there is more than one of these enabled portions of the graph. You could use cross() to determine the time when the enabling signal goes low/high and then use clip() to clip out that portion the curve, and then measure the frequency during that part.

    However, without a better idea of the overall data and objective I'm not sure I could be more specific. Probably best if you contacted customer support so that maybe  you can provide the simulation result database so that an application engineer can take a look and advise.

    Regards,

    Andrew.

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