請問PLL的BANDWIDTH為什麼是1/10的reference frequency

tamino

Dear antia66,
If damping factor is choosen 2, how about the natural freqency?
Will the natural freqency changed with damping factor ?
As my understanding, choose bandwidth <= 1/10*reference freq is for linear model is valid or not, that is, if need widther bandwidth PLL, the parameter from continuous model cannot provide expected PLL behavior.
However, VCO related noise causes the bandwidth cannot choosed to too high bandwidth.
3 V/ J! a8 K5 X/ N) XSo, linear model is usually useful.