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FMC108 input circuit

Dear sir,

I am currently adjusting the gain of my analog chain to make best use of the ADC input dynamic.
However, I observe some rare glitches (1us, 100-200 samples, every minutes ou hours depending on the time of day) on the analog input signal that are commonly 10-20 times stronger than the dynamic of my "signal of interest".  [url=][/url]
I am affraid to damage the ADC analog inputs if I increase the gain and get my digital readings out of range but I am also disapointed to have such low input levels for my signals of interest.

Do you know to what extent the ADC analog inputs will handle such spikes?
Could I know more about the ADC analog inputs in order to study the addition of a "clipper"?
Maybe you can advise a circuit that would provide such protection?
Sincerely Yours,

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