BinaryMonkey
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I am using spectre 14.1.0.138, MMSIM14.1.0,Cadence IC6.1.6-64b
I am curious about how did Spectre implement the "estimated oscillating frequency" and "estimated linewidth". Is it using FFT? Or is it using auto-correlation function? How do I know about the metrics for confidence of this estimation? Can I assume that I reach steady state if seeing these things in log? Is this information enough to for us to infer a more reasonable Tstab to save time in simulation?
In my output log , it says "Estimated line width of the oscillator is 699.02 mHz." "Estimated oscillating frequency from Tstab Tran is = 26.0096 MHz" "Tstab: runs at least 100 timesteps per cycle, MaxStep=3.84474e-10"
PS: I will be very grateful if the answers also come with a reference to papers/books/app notes explaining the mechanism rigorously.
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