A Sub-Sampling-Chopper PLL With Residual-Free Charge-Sharing Canceling Achieving 39-fsrms Jitter and -258.2-dB FoMJ. - Xiangjian Kong; Kai Xu; Hao Lian; Haolang Wen; Zhe Li 080; Chunbing Guo (IEEE Trans. Circuits Syst. II Express Briefs, 2025)