On the Stability of Charge-Pump Phase-Locked Loops.
IEEE Transactions on Circuits and Systems I: Regular Papers(2016)
摘要
This paper employs a time-variant model to determine the exact small-signal loop transmission of second-order charge-pump phased-locked loops. The model predicts that a loop bandwidth of close to half the input frequency can be achieved. The large-signal behavior is also analyzed and two modes of oscillation are identified. The results are confirmed by means of circuit simulations.
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关键词
Phase locked loops,Charge pumps,Frequency modulation,Stability analysis,Circuit stability,Voltage-controlled oscillators,Integrated circuit modeling
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