Jan 22, 2018 #1 M mario_11 Newbie level 2 Joined May 27, 2016 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 14 Matched resistors : thermal noise correlation ? Should 2 close and matched poly resistors have correlated thermal noise ?
Matched resistors : thermal noise correlation ? Should 2 close and matched poly resistors have correlated thermal noise ?
Jan 22, 2018 #2 C c_mitra Advanced Member level 6 Joined Nov 13, 2012 Messages 3,815 Helped 929 Reputation 1,860 Reaction score 922 Trophy points 1,393 Activity points 30,141 Re: Matched resistors : thermal noise correlation ? Should 2 close and matched poly resistors have correlated thermal noise... Click to expand... The short answer is No. Thermal noise is statistical in nature; random fluctuations of the electron distribution. Consider an uniform rod: measure noise in the first 1/2 and also in the second 1/2. They will be statistically identical but still uncorrelated. Lack of correlation in the time domain implies lack of correlation in the frequency domain too.
Re: Matched resistors : thermal noise correlation ? Should 2 close and matched poly resistors have correlated thermal noise... Click to expand... The short answer is No. Thermal noise is statistical in nature; random fluctuations of the electron distribution. Consider an uniform rod: measure noise in the first 1/2 and also in the second 1/2. They will be statistically identical but still uncorrelated. Lack of correlation in the time domain implies lack of correlation in the frequency domain too.