To build limiters that protect my analog input stages, I use for years the base-collector junction of transistors instead of simple diodes. This improves the SNR (the base-collector junction seems less noisy than the diode junction). It has become a reflex and now I am not able to find the justification again. And unfortunately, I did not found anything on this subject. Does anyone have an application note on the subject or just a better memory than mine?
Thank you in advance