Introduction - If you have any usage issues, please Google them yourself
The file give and explanation about analog to digital converter input noise. All analog-to-digital converters (ADCs) have a certain amount of
input-referred noise—modeled as a noise source connected in series
with the input of a noise-free ADC. Input-referred noise is not
to be confused with quantization noise, which is only of interest
when an ADC is processing time-varying signals. In most cases,
less input noise is better however, there are some instances where
input noise can actually be helpful in achieving higher resolution.
If this doesn’t seem to make sense right now, read on to find out
how some noise can be good noise