Proteus.

MikeML

Joined Oct 2, 2009
5,444
In LTspice, I would create a behavioral model; something that has the same electrical attributes, switching speed, output voltage swing, current sinking/sourcing ability, etc. The circuit doesn't care that your sensor can detect a human; all it cares about is how the sensor passes its electrical output to the rest of the circuit...
 
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