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How to put X-axis into a variable related to the sweeping variable rather than the sweeping variable itself (by default) in the Cadence Waveform?

Alex Liao

Hi All,

I have a question related to Cadence waveform....After i do the DC sweep simulation, I want to plot 

gm/id VS id/(w/l)


Eg: If i sweep W (width) of a device and now i only can plot gm/Id vs W in a straightforward way as the W is the sweeping variable default set as the X-axis.

When w changes, the id changes. So what I want is like sweeping w, rather putting it(w) directly into X-axis, put a function [ f(w)=id/(w/l) ] into X-axis (no bother to Y-axis).



Any suggestions??

regards,

Alex.

Parents

  • Hey Andrew,

    Thanks. When I do Mouse Right Click, I tried the "Y Vs Y..." choice and it actually meet my requirement.

    I also checked my Cadence, It is Virtuoso 6.1.6. I do not know what ISRs is and if I am using an ISRs version or not. But I did not find the waveVsWave function in the calculator. In the All Function Panel, the last function in 'V' section is 'vtime' and the next one is 'x**2‘. No funtion starts with 'W'.

    Regards,

    Alex

Reply

  • Hey Andrew,

    Thanks. When I do Mouse Right Click, I tried the "Y Vs Y..." choice and it actually meet my requirement.

    I also checked my Cadence, It is Virtuoso 6.1.6. I do not know what ISRs is and if I am using an ISRs version or not. But I did not find the waveVsWave function in the calculator. In the All Function Panel, the last function in 'V' section is 'vtime' and the next one is 'x**2‘. No funtion starts with 'W'.

    Regards,

    Alex

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