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Hi~ everyone. I have been confused about the differential ring oscillator that I simulated several differential ring oscillator, it was functional but the frequency of output wasn't changed with controlled voltage. In the schematic, what should I determine the size of transistors. Thank for...
So far, I have been simulated differential ring oscillator by cadence spectre, but I don't know which the output is really, especially output frequency versus control voltage please post your idea to solve this question for me. thanks for replying
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Hi, everyone. I have used cadence spectre to measure the frequency of differential ring oscillator, but there is a problem, I set vc to control the output frequency, but the simulation result of both vo is constant(see blow). I hope that someone could solve this problem
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