What is the difference between crystal and oscillator| Xtalong
Crystal Resonators can be divided into Quartz crystal resonators and ceramic resonators.
Resonators refer to electronic components that generate resonant frequencies. It is a typical passive device that requires peripheral circuits to drive its work and generate clock output. Crystal resonators are commonly divided into quartz crystal resonators and ceramic resonators. The function of generating frequency has the characteristics of stability and good anti-interference performance, and is widely used in various electronic products.
What is the function of Resonators?
Quartz crystal resonators have higher frequency accuracy than ceramic resonators, but also cost more than ceramic resonators. Resonators mainly play the role of frequency control, and all electronic products require resonators for frequency transmission and reception. The type of resonator can be divided into two types: in-line type and SMD type according to the shape.
What composed of ceramic resonators and why sometimes people chose it?
A ceramic resonator is a piezoelectric ceramic device used to oscillate at a specific frequency. The materials used to make such devices excite resonant properties during the production process. Since this resonant characteristic is within manufacturing tolerances and its figure of merit is much lower than that of quartz, ceramic resonators do not provide as much frequency stability as crystal resonators. Usually ceramic resonators are used in occasions where the cost is low and the performance is not high.
Compared with ceramic resonators, what is teh advantages and disadvantages of quartz crystal resonators?
Advantages: Compared to crystals, ceramic resonators cost half as much and are smaller in size.
Disadvantages: Compared with crystals, they lack frequency and temperature stability. Its accuracy is poor, probably between 1% and 0.1%.
What is a crystal oscillators?
Oscillator is an energy conversion device - converts DC power into AC power with a certain frequency. An oscillator is an electronic component used to generate a repetitive electrical signal (usually a sine or square wave). The circuit it constitutes is called an oscillator circuit. An electronic circuit or device that can convert direct current into an alternating current signal with a certain frequency.
How many types of crystal oscillators there are ?
There are many types, which can be divided into self-excited oscillators and other-excited oscillators according to the oscillation excitation method; According to the circuit structure, it can be divided into RC oscillator, LC oscillator, crystal oscillator, tuning fork oscillator, etc.; According to the output waveform, it can be divided into sine wave, square wave, sawtooth wave and other oscillators. Widely used in electronics industry, medical treatment, scientific research and so on.
What is the advantages of crystal oscillators?
The signal quality of the crystal oscillator is good, relatively stable, and the connection method is relatively simple (mainly to do a good job of power supply filtering, usually using a PI filter network composed of a capacitor and an inductor, and using a small resistance resistor at the output to filter the signal. Yes), no complicated configuration circuits are required. For applications with sensitive timing requirements, crystal oscillators perform relatively well.
What is the disadvantages of crystal oscillators?
a. Signal Level
Compared with the crystal resonator, the disadvantage of the crystal oscillator is that its signal level is fixed, it is necessary to select a suitable output level, the flexibility is poor, and the price is high. In addition, the quartz oscillator takes a long start-up time.
b. Volume
Compared with passive crystals, crystal oscillators are usually larger in size. With the improvement of technology, some crystal oscillators are now surface-mounted, and the volume is equivalent to that of crystal resonators.