With a +/-10V supply to the MUX36S08 and analog input that can occasionally reach +/-25V, what type of input protection circuitry would be recommended ? Is a series current limiting resistor (e.g. 5K) sufficient ?
The Data Sheet seems to indicate that the analog inputs can extend 2 volts beyond the rails without damage, from which I infer that there might -not- be internal, reverse biased diodes to the rails to protect the inputs. If this supposition is correct, then a current limiting resistor might not be sufficient and I might therefore need to implement my own (external) reversed biased diodes to the rails to protect the analog inputs (which would be a lot of extra parts for eight inputs ...)
The Data Sheet doesn't seem to include any information on input protection (or at least I couldn't find it) ....
Perhaps the internal reversed biased diodes were omitted to limited the leakage current ??? Or perhaps I'm just misinterpreting the Data Sheet ...
Thanks !