A Low-Voltage PLL With a Supply-Noise Compensated Feedforward Ring VCO.

Sung-Geun Kim,Jinsoo Rhim,Dae Hyun Kwon,Min-Hyeong Kim,Woo-Young Choi

IEEE Transactions on Circuits and Systems II: Express Briefs（2016）

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摘要

A low-voltage phase-locked-loop (PLL) circuit with a supply-noise-compensated feedforward ring voltage-controlled oscillator (FRVCO) is demonstrated. The oscillation frequency fluctuation due to supply noise is compensated by adjusting the ratio of driving strength in feedforward and direct paths in FRVCO. A prototype 400-MHz PLL circuit operating at 0.65 V is fabricated with 180-nm standard CMOS ...

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关键词

Phase locked loops,Sensors,Fluctuations,Feedforward neural networks,Jitter,Voltage-controlled oscillators

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