The real detail lies in the phase comparison and the loop filtering, something that will make more sense once you have watched the videos.

But taking a voltage-controlled oscillator at 100 MHz (nominal) and dividing its output by 100 will give you a signal you can lock to a 1 MHz crystal oscillator which is, of course, trivial to build.

San Mateo, Calif. – Phase-locked and delay-locked loops are becoming increasingly important weapons in the system-on-chip design arsenal, but PLLs and DLLs are notorious for their difficulty. Now, ...

Drucker, "Phase Lock Loops and Frequency Synthesis for Wireless Engineers", 1997, Frequency Synthesis & Phase-Locked Loop Design, 3 Day Short Course, Besser Associates, Mountain View, CA, 1999.

Radiation-hardened phase-locked loop (PLL) circuits represent a critical advancement in safeguarding electronic systems against the deleterious effects of ionising radiation.

The Agilent 86100CU-400 PLL and jitter spectrum measurement software is a free application that makes fast, accurate, and repeatable PLL measurements using a precision jitter source and receiver. This ...

Scientists have developed an advanced phase-locked loop (PLL) frequency synthesizer that can drastically cut power consumption. This digital PLL could be an attractive building block for Bluetooth ...

A standard design procedure for a typical Type 2, second-order loop. As stated in Parts 1 and 2, phase-locked loops (PLLs) are ubiquitous in today’s high-tech world.

Radiation-Hardened Phase-Locked Loop Circuits Publication Trend The graph below shows the total number of publications each year in Radiation-Hardened Phase-Locked Loop Circuits.