trond
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I have a basic question about VCO models and their actual circuit implementation. I know how to simulate and model a VCO mathematically but have difficulties translating this to a real circuit.
1) For example, in a N-stage ring oscillator (simple differential pair with variable output time constant) where is the internal phase? Can I plot it in a real circuit as I can in a model? In the mathematical model it is just the integration of the frequency, i.e. idtmod(frequency, 0 ,1).
2) Speaking of the idtmod function, how does the real circuit reset itself when crossing a certain internal phase value and how can I change this?
Thanks.
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