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PLL Macro Model Wizard

slim5

Hi,

  I am trying to use the PLL Macro Model Wizard to create a macro model for a VCO and I used the information from the document file titled "Virtuoso Spectre Circuir Simulator RF Analysis User Guide" (Product version 7.2, December 2009) as my guide. When I got to the Figure 16- and clicked OK, I got this error "Unable to find VCO plugin in similator library directory. PLL Macro Model will be disabled."

  Does anyone know what is the cause of this error and how I should go around to fix it?

   Thank you!

Regards,

Su Lim

Parents

  • Hi Su Lim,

    Please provide more information as to which IC version are you using and also exact Spectre version. Were you able to setup and run the VCO macro-model extraction testbench?  The reason I am asking so is because the Fig 16 you are refering is the top level pll bench which requires that both the macro model for VCO and PFD-CP has already been extracted and are now used for determine the PLL noise.

     Regards,

    Ashish

Reply

  • Hi Su Lim,

    Please provide more information as to which IC version are you using and also exact Spectre version. Were you able to setup and run the VCO macro-model extraction testbench?  The reason I am asking so is because the Fig 16 you are refering is the top level pll bench which requires that both the macro model for VCO and PFD-CP has already been extracted and are now used for determine the PLL noise.

     Regards,

    Ashish

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