A 0.65-V 12–16-GHz Sub-Sampling PLL With 56.4-fs<sub>rms</sub> Integrated Jitter and −256.4-dB FoM

A 0.65-V 12–16-GHz Sub-Sampling PLL With 56.4-fsrms Integrated Jitter and −256.4-dB FoM | IEEE Journals & Magazine | IEEE Xplore