Physicists in Germany have sent a burst of light over a distance of 920 km down an optical fibre – with its frequency remaining stable to the 19th decimal place. As well as supporting the development ...

As consumers thirst for the high-definition experiences delivered by expanding amounts of signal bandwidth, design challenges related to clocking become increasingly difficult and complicated. The ...

With the advances of highly phase coherent lasers, optical atomic clocks containing multiple atoms have demonstrated stability that reaches the standard quantum limit (SQL) set by the available atom ...

Clock-distribution devices create multiple copies of a master clock and distribute them to a variety of integrated circuits. They accept single-ended or differential clock inputs and supply multiple ...

Many common measurements require some form of timing reference to synchronize the measurement process. While synchronizing clocks are often available directly from a test system, functioning ...

At a logical level, synchronous designs are very simple and the clock just happens. But the clocking network is possibly the most complex in a chip, and it’s fraught with the most problems at the ...

This circuit transforms a pulse-width-modulation (PWM) signal into non-overlapping clock signals, whose number depends on the length of a shift register. These clock signals can be used to power up ...

The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set it again. Whether it’s a little digital job on your desk, or some big analog wall clock ...

Clocks are power- and area- hungry, and difficult to distribute in a controlled manner. What is being done to reign in these unwieldy beasts? The synchronous digital design paradigm has enabled us to ...