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how to calculate THD ??

Muffassir

 Hi all;

 

 I want to calculate the total harmonic distortion (%)   of my analog circuit.. I have two inputs as Vx and Vy ..Wherein i want to plot the THD variation due to input voltage swing between 0 and 1.8V while Vx set to different DC values.

How can i do that in cadence . I am using Cadence 6.1.4.500 and ADE L . and gpdk180.

 

Thanks in advance..

 

 

Parents

  •  Thanks Andrew,

    I am now able to calculate the THD for a single trans run for one input .

    I think i am able to do the parametric sweep by using the Vx and Vy variables in the Parametric Analysis Rows at the same .I think that this called as two dimensional analysis if i am not wrong .(correct me if needed)

    Can you please more elaborate on how to calculate the THD from this waveforms and plot the THD vs one of the inputs.Also i dont find the erplot button in my calculater to plot the buffer vale.?

     

Reply

  •  Thanks Andrew,

    I am now able to calculate the THD for a single trans run for one input .

    I think i am able to do the parametric sweep by using the Vx and Vy variables in the Parametric Analysis Rows at the same .I think that this called as two dimensional analysis if i am not wrong .(correct me if needed)

    Can you please more elaborate on how to calculate the THD from this waveforms and plot the THD vs one of the inputs.Also i dont find the erplot button in my calculater to plot the buffer vale.?

     

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