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Definitions

When is a Crystal not a ‘Crystal’?: Tuning Forks

March 31, 2017December 13, 2017 Michelle Lozada Definitions Crystal

Quartz is the material of choice for stable resonators, as it is one of the few piezoelectric crystals that has very high Q and is also highly anisotropic.  Continue reading →

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Crystal Pullability: Series Vs Parallel Resonant Crystals

December 15, 2016December 15, 2016 pvect Definitions, Specifications Crystal

The image below is a common diagram implementing a crystal.  An even more common question is what is the purpose or function of the capacitors tied onto either terminal of the crystal?  Continue reading →

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Characterizing a Crystal

November 7, 2016November 7, 2016 pvect Definitions Crystal

We often discuss the complex designs that oscillators can achieve, but rarely stop and think about a fundamental component: the quartz crystal.  Continue reading →

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How is it that the impact of vibration on phase noise is defined in ppb/g?

October 24, 2016October 24, 2016 pvect Definitions, Specifications Phase Noise, Resources, Vibration

In the world of oscillators specifications get passed around as a form of convenient shorthand and we get so accustomed to the terms used to describe the specifications that we often forget how they got that way. Continue reading →

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How to Measure Jitter

August 24, 2016 pvect Definitions, Specifications Jitter, Oscillator, Phase Noise

Continuous advances in high-speed communication and measurement systems require higher levels of performance from system clocks and references. Continue reading →

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Datasheet Jitter Specs and You

July 25, 2016 pvect Definitions, Specifications Jitter, Oscillator, Phase Noise

As previously demonstrated, timing noise/jitter is a very complicated phenomenon, and in order to understand how jitter can impact a system it needs to be measured and quantified.  Continue reading →

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What Is Jitter?

July 25, 2016July 25, 2016 pvect Definitions, Specifications Jitter, Phase Noise, Wander

What Is Jitter?

Jitter as defined by NIST as the “short term phase variation of the significant instants of a digital signal from their ideal positions in time”.  Continue reading →

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