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Quarterly stabilised mono-chip oscillator with automatic levelling and tuning and a method to generate oscillator output signal
Quarterly stabilised mono-chip oscillator with automatic levelling and tuning and a method to generate oscillator output signal
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机译:具有自动调平和调整功能的季度稳定型单芯片振荡器以及一种生成振荡器输出信号的方法
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摘要
A highly stable single chip crystal controlled oscillator with automatic gain control. An amplitude detector monitors the output of a crystal controlled oscillator amplifier and produces a feedback signal proportional to the output signal of the amplifier to ensure oscillation is induced at startup and that the amplitude of oscillation is limited to a preselected value during operation to conserve power consumption by the amplifier. The capacitor tank circuit connected to the input of the amplifier includes a voltage variable capacitor the voltage across which is initially established at manufacture to tune the oscillation frequency to a preselected value. The voltage across the voltage variable capacitor is also adjusted to compensate for temperature variations in the circuit.
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