晶體參考表
晶體參考表
| Quartz Crystal: A circuit element having a very stable Mode of Oscillation characteristic composed of quartz. Holder: The package that the crystal is enclosed within. Mode: A crystal operates in either a series or parallel mode. Series Mode: The crystal appears resistive in the circuit when operating at series resonance. Parallel Mode: The crystal appears inductive in the circuit when operating at parallel resonance. Calibration Tolerance: The frequency of the crystal at a specified temperature (typically +25°C). Temperature Stability: The frequency deviation of the crystal over the operating temperature range. Aging: The frequency change which results from permanent changes in the crystal over time. Load Capacitance: The specified capacitance of a crystal that a circuit must be for the crystal to be on frequency. Motional Capacitance: The parameter that affects the ability of the crystal to change frequency with changes in load capacitance. Equivalent Series Resistance (ESR): The resistance of the crystal with a series load capacitance. Drive Level: The measure of power dissipated within the crystal. Crystal Cut: The properties of a crystal are very dependent upon the way that the crystal is cut with reference to it's internal crystalline planes. |
Quartz Crystal Equivalent Circuit  |
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