I have this non inverting op-amp circuit:
I would like to calculate the output with the Op-amp noise impact. I can easily find the voltage output, but only if I assume there is no noise.
How to do it with noise Op-amp (assuming others components are "perfect")?
We will use a TI OPA141 Op-amp: http://www.ti.com/lit/ds/symlink/opa141.pdf
Input is signal frequency is 100Hz. I want to use the 6.5nV/sqrt(Hz) but it seems to be a spectral density, and I can't add it to a voltage.
I wanted to use the square of this to find a value in RMS, but it failed and I want a voltage value, not a RMS value. We should have 42.25V^2/Hz
How can I find the noise from the opamp?