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how to measure power consumption of a circuit in cadence spectre

indra0804

Hi,

I would like to know how can I estimate the power consumption of a circuit say an inverter circuit in cadence environment. I searched through the internet, but couldn't find any suitable doc that is helpful in this regard. I am looking for the steps required for power estimation.

Thanks & Regards,

Indrajit 

  • Andrew Beckett

     Save the current through the voltage source, and then multiply the current by the voltage - and maybe take the RMS of that using the rms function in the calculator?

  • kartheek RP
    Hi sir, for any circuit (say inverter or NAND gate), how to measure all different types of power losses separately, say like Static power consumption,Dynamic power consumption (charging,discharging of parasitic capacitors),leakage losses in cadence ?
  • Andrew Beckett
    Could you compare the current through the voltage source between a DC analysis (which won't include any dynamic power) and a transient analysis (which would)?
  • sazjad

    Hi, 

    I am running a .spice netlist using spectre. Unlike the initial issue I have hundreds of vsource and isource (I am using a power grid benchmark). Now can you please let me know which command should I use to measure the total power? 

    Thank you. 

  • Andrew Beckett

    Add:

    simulator lang=spectre
    myOpts options pwr=subckt
    save I0:pwr

    where I0 is the name of the subckt you wish to save the power for.

    Regards,

    Andrew.

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