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Pierce oscillator bias resistor

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M

mitrobge

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I use an amplitude regulation loop (the one used by Vitoz) in a crystall oscillator based on the Pierce configuration. I am not sure how to choose the bias resistor (the one between D and G of MOS). Ideally the bigger it is the less power is consumed in it.
Also, because of the amplitude regulation loop there is a multi-pole system. I do not really understand how to choose the bias resistor so that the oscillator is stable.
 

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