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2024/05
The difference between passive crystal and active crystal?
1. passive crystal-passive crystal needs to use the oscillator in DSP chip, in datasheet. There are recommended connection methods on. Passive crystals have no voltage problem, and the signal level is variable, that is to say, it is determined according to the starting circuit. The same crystal can be applied to a variety of voltages, can be used for DSP with different clock signal voltage requirements, and the price is usually lower. Therefore, crystals are recommended for general applications if conditions permit, which is especially suitable for producers with rich product lines and large quantities. Relative to the crystal oscillator, the defect of passive crystal is that the signal quality is poor, and it is usually necessary to match the peripheral circuit (capacitor, inductor, resistor, etc. for signal matching). When replacing the crystal with different frequencies, the peripheral configuration circuit needs to be adjusted accordingly. It is recommended to use quartz crystals with high precision, and avoid using ceramics with low precision as much as possible.
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