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Simulators >> RF Simulators >> How to calculate phase noise of PLL in cadence?
https://designers-guide.org/forum/YaBB.pl?num=1529512874

Message started by pashtp on Jun 20^th, 2018, 9:41am

Title: How to calculate phase noise of PLL in cadence?
Post by pashtp on Jun 20^th, 2018, 9:41am

I have designed PLL in 90nm and now wants to calculate phase noise for the same. Can anyone suggest steps to calculate it in virtuoso ic 6.1.5?

Title: Re: How to calculate phase noise of PLL in cadence?
Post by sheldon on Jun 20^th, 2018, 1:55pm

You can use the calculator. Think that the equations are documented
somewhere in the PAKs/app notes. The calculation has been automated
in more recent versions.

The equation is something like,
power spectral density ( absolute jitter)

Title: Re: How to calculate phase noise of PLL in cadence?
Post by pashtp on Jun 20^th, 2018, 11:33pm

Yes I found phase noise function. In that function what should be the harmonic number, signal dataset and noise dataset? And i need to select vco output waveform right??