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How to model input refered noise for Gm blocks?

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princerock

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Hi everyone,

I'm doing a course project about sigma-delta macromodel design. According to specs I have to add input-refered-noise to the ideal Gm building block (VCCS) in order to calculate the SNR. What confused me is, as the input-refered-noise is frequency-dependent, how can i model it in cadence? What should I add to a VCCS?

Thank you for your help!

princerock
 

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