op amp noise calculation

[glias]

Hello all,

I would want to have your opinion on this expression

For me the inn term must be multiplied by the equivalent resistor R1//R2 and not only the R2 like the document tell us.

What do you think of it ?

regards

**broken link removed**

 

[erikl]

For me the inn term must be multiplied by the equivalent resistor R1//R2 and not only the R2 like the document tell us.

What do you think of it ?

At least the intersil people confirm your opinion: