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Hi,
Thanks for the replies.
Could you give some more details about them? Are they modelled same way as a quartz crystal?
You mean to say that pierce oscillators have not really limitations due to the crystal frequency, right?
Not really sure about this, nowadays there are quartz...
Hi,
I have been reading that different XO architectures are limited by the oscillation frequency of the crystal i.e. the famous pierce/collpits oscillators are limited until 200MHz crystal frequency.
In what sense is that correct? Is the limitation factor the amount of negative resistance...
Hi,
Yes current source should be. Now you achieve this current source with a biasing transistor.
My question is what is the difference biasing this transistor with a dc current and a dc voltage.
Regards
Hi,
I´m sorry, I was not very clear before. I was more interested in differential pairs, I have seen different architectures where the gate of the biasing transistor is sometimes a dc voltage and sometimes a current source.
Can someone explain me the difference here?
Regards
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