loose-electron
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San Diego California
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VCO counter ADC BW is a function of the count period. Typically you do a VCO count for a fixed period of time based upon the sample input voltage, and then do the same time period and get the count when connected to a reference voltage (typically the V bandgap) and then you take the ratio of the two numbers.
It is not a linear system simulation, and you generally run the count out to some large numbers in order to average out the inherent (flicker and thermal) noise of the system.
I designed one of these for Intel back in the Pentium 1 era for their thermal monitor. These devices are very slow, generally with update rates multiple seconds apart, and the BW approximation can be crudely approximated by the update rate.
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