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Method, system and apparatus for reducing oscillator frequency spiking during oscillator frequency adjustment
Method, system and apparatus for reducing oscillator frequency spiking during oscillator frequency adjustment
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机译:在振荡器频率调整期间减少振荡器频率尖峰的方法,系统和装置
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摘要
Current sources are selectively coupled to a current controlled frequency determining circuit of an oscillator. A buffer amplifier has an input coupled to the current controlled frequency determining circuit of the oscillator and the buffer amplifier output is selectively coupled to the current sources not coupled to the frequency determining circuit of the oscillator. The buffer amplifier output maintains substantially the voltage of the current controlled frequency determining circuit on each of the current sources not coupled to the frequency determining circuit so that when any current source is coupled thereto, there is substantially no voltage difference therebetween. This substantially prevents generation of undesirable frequency spikes during coupling of the current sources to the frequency determining circuit of the oscillator.
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