Views: 4 Author: Site Editor Publish Time: 2018-02-05 Origin: Site
The matching capacitance of passive crystal oscillator is usually better to choose two unequal capacitors, one large and one small can speed up the start of vibration. The larger capacitance is beneficial to the stability of the oscillation, but it will increase the starting time. The commonly used capacitors are 12PF, 15PFU 22PFN 33PF and so on. It's about 20 pips.