We propose a hybrid LC-tank PLL realized in 5-nm FinFET CMOS for radar and 5G mobile applications. The oscillator has three input ports: 1) A conventional arrangement of phase/frequency detector and charge pump controls the oscillator via its tuning voltage. 2) A programmable phase realignment injects ultra-narrow and ultra-sharp complementary reference pulses into the oscillator to adjust timing of its waveform's peaks and valleys; this improves the in-band phase noise and helps to mitigate the worsening flicker noise in advanced process nodes. 3) A dynamic coarse tuning digitally extends the oscillator's tracking range by allowing it to quickly recenter the varactor. The PLL achieves 55.9 fs integrated jitter (from 100 kHz to 100 MHz).
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