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Hello, welcome to Shenzhen JSK Science & Technology Co.,Ltd official website !!!

Language:中文 English

National hotline:
+86 0755-83551725

Hello, welcome to Shenzhen JSK Science & Technology Co.,Ltd official website !!!

Language:中文 English

National hotline:
+86 0755-83551725

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The simplest solution of quartz crystal resonators and vibrators



Quartz crystal resonator (often abbreviated as Xtal), referred to as quartz crystal or crystal, it is the use of quartz crystal piezoelectric effect, used to generate high-precision vibration frequency of an electronic components. Need to deploy additional circuit will occur vibration. Is forced (passive) components, we call it passive crystal. The element is mainly composed of quartz wafer, base, shell, silver plastic, silver and other components.
According to the lead situation we quartz crystal is divided into straight (with lead) and the appearance of the placement (no lead) two varieties. Passive crystal is usually two connected electronic components.
Quartz crystal vibrator (abbreviated OSC or XO) refers to the module containing quartz crystal and vibration circuit, which requires power supply, can directly produce vibration signal output.
Because it contains automatic (active) electronic components, all modules are also automatic components, so we call it active crystal. Quartz vibrator is usually four pin of the electronic components, during which two for the power supply, one for the vibration signal output, the other for the empty feet or control.
Compared to the quartz crystal resonator, the quartz crystal vibrator is very complex, which is not only the table now its parameters, together with the table now on its variety. In an article on the warming of the crystal we have now learned that the temperature is a quartz crystal crystal oscillator. In the crystal industry, we usually divide the quartz crystal vibrator into the following categories: SPXO usually vibrator, TCXO temperature compensator, VCXO voltage controlled crystal oscillator, OCXO thermostat vibrator and VC-TCXO pressure control temperature compensation vibrator The Let's take a look at these quartz crystal vibrators.
Usually the quartz crystal vibration (SPXO), it was also called XO, OSC vibrator, SPXO can occur 10 ^ (-5) ~ 10 ^ (-4) order of the frequency accuracy, the standard frequency of 1 ~ 100MHZ, frequency stability is ± 100ppm. SPXO does not use any temperature frequency compensation method, offer low, usually used as a microprocessor clock equipment. Commonly used scale 7.0 * 5.0mm, 5.0 * 3.2mm, 3.2 * 2.5mm and so on. The voltage-controlled crystal vibrator (VCXO) is a vibrator that uses a controlled voltage to shift the frequency to a certain degree.
It is mainly composed of crystal, varactor diode and vibration circuit, its operating principle is to manipulate the voltage to change the capacitance of the varactor, and then pull the frequency of the crystal to reach the intention of the frequency offset conditioning. The precision is 10 ^ (-6) ~ 10 ^ (-5) order, frequency scale 1 ~ 30MHz. The frequency stability of the low tolerance vibrator is ± 50ppm. Usually used for phase-locked loops.