• Welcome ZHONG SHAN HUIYUAN CRUSTAL ELECTRONIC TECHNOLOGY CO., LTD Official website!

ZHONG SHAN HUIYUAN CRUSTAL ELECTRONIC TECHNOLOGY CO., LTD


SHEN ZHEN HUIYUAN CRYSTAL ELECTRONIC CO., LTD

News

What should be paid attention to when designing crystal oscillator circuit

Release date:2019-12-03


1. In the circuit board design, the crystal oscillator circuit should be as short and straight as possible, and as close as possible to the single-chip microcomputer. The effect of stray capacitance on quartz crystal resonator is minimal.


2. When designing the crystal oscillator circuit on the circuit board, do not make the signal line pass farther and farther below the crystal oscillator, so as to avoid electromagnetic interference to the quartz crystal resonator, which will lead to the instability of the oscillator circuit.


3. If the circuit board is large, do not design a crystal oscillator in the middle and try to place it on the side. This is because the crystal oscillator design in the middle position will be affected by the stress generated by the deformation of the circuit board, may appear undesirable phenomenon.


4. If your circuit board is small, it is recommended to design the crystal oscillator to the center rather than the edge as much as possible. This is because the circuit board is very small, the general chip welding is multi-panel, the stress on the split plate will affect the quartz crystal resonator, may produce adverse effects.


5. When selecting the model and specification parameters of the crystal oscillator, the engineer should try to confirm with the crystal oscillator manufacturer or a professional agent to avoid the use of unusual dimensions or parameters, which may lead to reduced supply channels and longer supply cycles, which may affect production and price may also be passive.


6. In general, it is not recommended to use ultrasonic cleaning of a circuit board (crystal oscillator) with a quartz crystal resonator to avoid resonance and damage to the quartz crystal resonator resulting in undesirable conditions.