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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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Fundamental vs 3rd Overtone

January 30, 2017January 30, 2017 pvect Specifications Crystal

Typically when we talk about crystals, we are referring to crystals using the fundamental vibration mode of AT-cut quartz.  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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Common Source of Jitter in Oscillators

September 1, 2016September 1, 2016 pvect Specifications Jitter, Oscillator, Phase Noise

We are rounding up our Clock Jitter series by taking a look at what external factors can induce jitter in oscillators, and how they can be effectively compensated for. 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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