deba
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Hi All,
In the attached frequency locked loop, why is there a need of compensation network formed by Rz,Cz, and Cc? As far as I see there is only one integrator in the closed loop, the OTA. The oscillator from vctrl to output frequency is just a gain block since the output variable of interest is just frequency. Single integrator loops are inherently stable, so why is there a need of compensation?
Is there some small signal modelling which I am missing?
Thanks
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