Hi,
I would like to understand how much noise the accelerometer has, in relation a resistor in the circuit. The noise power spectral density in voltage domain from the accelerometer is:
45ug/rtHz * 10mV/g = 450nV/rtHz
This would equate to about a 12 Mohm resistor:
sqrt(4kTR) = sqrt(4*1.38e-23*300*12e6) = 446nV/rtHz
Is my conclusion correct? If so, it is a quite significant noise.
Thanks!
Edit Notes
Minor clarifications.[edited by: MPalm at 5:06 PM (GMT -5) on 11 Nov 2025]