Design and implementation of calibration circuit for crystal oscillator

@article{Fang2016DesignAI,
  title={Design and implementation of calibration circuit for crystal oscillator},
  author={Qiu Fang and Shanzhu Xiao and Huanzhang Lu and Yabei Wu},
  journal={2016 International Conference on Integrated Circuits and Microsystems (ICICM)},
  year={2016},
  pages={122-126}
}
High performance crystal oscillator is usually used as the clock source of system timer in a miniaturization space aircraft, however, it cannot overcome the effect of long-term aging on accuracy. Thus, this paper presents a simple, light and efficient circuit to calibrate the difference between the actual output frequency and the nominal frequency of a crystal oscillator periodically in real time. The experiments show that the proposed design reduces the timing deviation from more than 1614ms… CONTINUE READING