How to use 'PLL noise PSD' for Cadence virtuoso Analog Design Environment ?

[Sang-ki Lee]

I'm fresh designer for PLL.

I want to simulate 'PLL Noise PSD' on transient simulation.

I had been using Analog design environment -> results -> direct plot -> main form.

but I couldn't see funtion of 'PLL Noise PSD'.

When I tried to plot 'PLL noise PSD' on transient analysis, the direct plot window shows the message "The PLL Noise PSD data is not available ...".

In spectre output log, I found the error message - "Error found by spectre. ERROR : PSD can not be calculated for lacking the instance called 'vco_freq' for period measurement! "

If anybody knows how to simulate 'PLL noise PSD' on transient simulation, plz tell me about the method step by step.

 

[AdvaRes]

Hi,
You can use the psd function of the calculator.
For more details take a look at this document (p. 89):
**broken link removed**

 

[Sang-ki Lee]

Hi, AdvaRes.
I'm using Cadence IC615.
Do you know how to get the 'Waveform user guide' for IC615 ?

 

[AdvaRes]

My experience with this cadence version is limited. I rarely used it.
Maybe if you search in the documentation provided with the software you can find the information that you are looking for.

 

[Sang-ki Lee]

My experience with this cadence version is limited. I rarely used it.
Maybe if you search in the documentation provided with the software you can find the information that you are looking for.

Thank you for your advice