Do you have any experience with analogue multiplexer ICs.
I was surprised to see the typical resistance of the switch is around 100 ohms (dependent on
input voltages) when compared to mechanical rotary switches.
If I connected a DVM to the common output to measure, for example 12 volts, and
the resistance of the switch, for example was 100 ohms, because of the high input
resistance of the DVM, the voltage drop across the switch is negligible. Therefore a negligible change
to the measured reading?
12V / (10M + 50 ohms) = 1uA
1uA*50 ohms = 50uV drop across switch.
Am I right with these assumptions?
NB. I attached the datasheet just for description use - not for specific data.
I was surprised to see the typical resistance of the switch is around 100 ohms (dependent on
input voltages) when compared to mechanical rotary switches.
If I connected a DVM to the common output to measure, for example 12 volts, and
the resistance of the switch, for example was 100 ohms, because of the high input
resistance of the DVM, the voltage drop across the switch is negligible. Therefore a negligible change
to the measured reading?
12V / (10M + 50 ohms) = 1uA
1uA*50 ohms = 50uV drop across switch.
Am I right with these assumptions?
NB. I attached the datasheet just for description use - not for specific data.
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