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 Oscillator: History, 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":
... heater, OCXOs require more power than oscillators that run at ambient temperature, and the requirement for the heater, thermal mass, and thermal insulation means that they are physically larger ... However, in return, the oven-controlled oscillator achieves the best frequency stability possible from a crystal ... stability is limited to around 1x10-8 (10 ppb) per year by aging of the crystal ...
... 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 class letter G (G1 ... Crystal oscillator types and their abbreviations ATCXO — Analog temperature controlled crystal oscillator CDXO — Calibrated dual crystal oscillator DTCXO ...
... physics, an Analog Temperature Controlled Crystal Oscillator or Analogue Temperature Compensated Crystal Oscillator (ATCXO) uses analog sampling ... 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 implemented in circuit blocks ... Once fabricated, this die is then embedded into an oscillator module along with the crystal blank ...
Famous quotes containing the word crystal:
“It is crystal clear to me that if Arabs put down a draft resolution blaming Israel for the recent earthquake in Iran it would probably have a majority, the U.S. would veto it and Britain and France would abstain.”
—Amos Oz (b. 1939)