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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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Development Trend of Quartz Crystal Oscillator



1, miniaturization, thinning and chip: for the convenience of mobile phones as represented by portable light, thin, short request, quartz crystal vibrator package from the traditional bare metal shell plastic metal to ceramic package changes.
Such as TCXO such equipment, the volume reduced by 30 to 100 times. Selection of SMD package TCXO thickness of less than 2mm, now 5 × 3mm scale equipment is now available.
2, high precision and high stability, and now no compensation for the total accuracy of crystal vibrators can reach ± 25ppm, VCXO frequency stability in the 10 ~ 7 ℃ scale is usually up to ± 20 ~ 100ppm, and OCXO in the same temperature scale Internal frequency stability is usually ± 0.0001 ~ 5ppm, VCXO control in the ± 25ppm or less.
3, low noise, high frequency, in the GPS communication system does not allow the frequency of shaking, phase noise
The sound is a primary parameter that characterizes the vibrator frequency. Today's OCXO mainstream product phase noise function has greatly improved. In addition to VCXO, other types of crystal oscillator maximum output frequency does not exceed 200MHz.
For example, for GSM and other mobile phones UCV4 series of voltage control vibrator, the frequency of 650 ~ 1700 MHz, power supply voltage 2.2 ~ 3.3V, operating current 8 ~ 10mA.
4, low function, rapid start, low voltage operation, low level drive and low current consumption has become a trend. The supply voltage is typically 3.3V. Today, many TCXO and VCXO products, the current loss does not exceed 2 mA. Quartz crystal vibrator rapid launch skills have also made a breakthrough. For example, VG-2320SC type VCXO produced by Seiko, Japan, in the case of ± 0.1ppm regular value scale, the frequency of stability is less than 4ms. Japan's Tokyo Ceramics produced SMD TCXO, 4ms after the vibration can reach 90% of the rated value. OAK's 10 ~ 25 MHz OCXO products can achieve ± 0.01 ppm stability after 5 minutes of warm-up.