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Need help - procedure to calculate the Noise in Amplifiers

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satheeshvelu

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Noise Calculation

Dear All,

I have some doubts in the procedure to calculate the Noise in Amplifiers.

I could able to calculate the Noise of one Individual Amplifier (with OPAMP Noiseless), and match it with the simulation result.

But when the output of the same Amplifier goes to another another amplifier, I could not able to calculate the Total Noise and match it with the Simulation result.

I have attached a pdf file showing the procedure to calculate the Noise in an Amplifier.

Similarly, if any of you can help me to solve the same with Multiple Amplifier, would be grateful.

Kindly have a look at the attachment.

Regards,
Satheesh
 

Noise Calculation

The total noise is a root from sum of squares of all noise sources: totalNoise = sqrt(ns1+ns2+...+ns_n)
 

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