The NB4N507A is the first in a series of fully-integrated phase lock loop (PLL) ICs designed to replace expensive crystal oscillators for clock generation in a wide variety of consumer and networking ...

The way time is measured is on the edge of a historic upgrade. At the heart of this change is a new kind of atomic clock that uses light instead of microwaves. This shift means timekeeping could ...

The next generation of atomic clocks “ticks” at the frequency of a laser. That is around 100,000 times faster than the microwave frequencies of the caesium clocks that currently generate the second.