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reducing the non linearity in ringoscillator based vco

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arya.jagadeesh

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i am trying to design vco with ring oscillator ..variation of output frequency with control voltage is not linear......is there any way to decrease the nonlinearity
 

arya.jagadeesh

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nonlinarity

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i have used differential pairs .....
 

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I guess you want to repeat the simulation with a reasonable number of points. Let's see if there's actually nonlinearity or just saturation.
 

arya.jagadeesh

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if i am plotting the outputs of counter individually they are plotted...instead i want to plot the value like say for 3 bit 000 001 010...etc what to do
 

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