Crystal Oscillator

A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency. This frequency is commonly used to keep track of time (as in quartz wristwatches), to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers. The most common type of piezoelectric resonator used is the quartz crystal, but other piezoelectric materials including polycrystaline ceramics are used in similar circuits.

Quartz crystals are manufactured for frequencies from a few tens of kilohertz to tens of megahertz. More than two billion crystals are manufactured annually. Most are used for consumer devices such as wristwatches, clocks, radios, computers, and cellphones. Quartz crystals are also found inside test and measurement equipment, such as counters, signal generators, and oscilloscopes.

Read more about Crystal OscillatorHistory, Operation, Electrical Oscillators, Commonly Used Crystal Frequencies, Crystal Structures and Materials, Stability and Aging, Crystal Cuts, Circuit Notations and Abbreviations

Other articles related to "oscillators, oscillator, crystal, crystal oscillator, crystals, crystal oscillators":

Crystal Oven - Accuracy
... required to run the heater, OCXOs require more power than oscillators that run at ambient temperature, and the requirement for the heater, thermal mass, and thermal ... However, in return, the oven-controlled oscillator achieves the best frequency stability possible from a crystal ... to around 1x10-8 (10 ppb) per year by aging of the crystal ...
Crystal Oscillator - Circuit Notations and Abbreviations
... On electrical schematic diagrams, crystals are designated with the class letter Y (Y1, Y2, etc.) Oscillators, whether they are crystal oscillators or other, are designated with the ... Crystal oscillator types and their abbreviations ATCXO — Analog temperature controlled crystal oscillator CDXO — Calibrated dual crystal oscillator DTCXO — Digital temperature compensated ...
Analog Temperature Controlled Crystal Oscillator
... In physics, an Analog Temperature Controlled Crystal Oscillator or Analogue Temperature Compensated Crystal Oscillator (ATCXO) uses analog sampling ... of the motional inductance and terminal capacitance of a crystal blank, the knowledge of which is used to create a correction polynomial, or algorithm, which in turn is ... Once fabricated, this die is then embedded into an oscillator module along with the crystal blank ...

Famous quotes containing the word crystal:

    The crystal sphere of thought is as concentrical as the geological structure of the globe. As our soils and rocks lie in strata, concentric strata, so do all men’s thinkings run laterally, never vertically.
    Ralph Waldo Emerson (1803–1882)