Monkeybad
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Hi, ywguo! First, as I know, the jitter usually increases when the circuit is much complicated, but not always be true. In this point of view, some duty cycle correctors using feedback control are much complicated than the divide-by-2 circuit, so I think it maybe increase the jitter. Well, if it is not, the things become much better, right? Second, I don't understand why you say 1X and 2X frequency VCO consumes the same power. If you want to change the oscillating frequency of a VCO, you turn down or up the current of the delay cell rather than change the stage of the delay cell, isn't it? Could you explain it in more detailed?
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