Willbe
New Member
FWIW, I found several formulas for "uncorrelated error" analysis, which goes beyond the root-sum-square stuff.
E.g., the gain of an opamp depends on Rf/Rin.
If ARf, BRin are nominal values of ohms, and
aRf, bRin are tolerances in ohms, and
Rf, Rin are what you will see in production, then
Rf/Rin = ARf/BRin +/- (ARf/BRin)x[{(aRf/ARf)^2} + {(bRf/BRf)^2}]^0.5
E.g., the gain of an opamp depends on Rf/Rin.
If ARf, BRin are nominal values of ohms, and
aRf, bRin are tolerances in ohms, and
Rf, Rin are what you will see in production, then
Rf/Rin = ARf/BRin +/- (ARf/BRin)x[{(aRf/ARf)^2} + {(bRf/BRf)^2}]^0.5