I like to change a conventional rotary switches (many signals of varying amplitudes) with input ranges upto 40 VDC for measurements to semiconductor switching being controlled through software. If someone can suggest such switches/MUXs?
The ADG54xx family of switches and multiplexer can operate with a 40V single supply. The following link show a member of the ADG54xx family, the ADG5401.
I hope this helps.