I'm going to use a DC outputting 10k windvane and the manufacturer recommends it to use it with a buffer with some additional resistors. This is the paper where they recommend how to condition the vane signal.
I want to power the vane with 5V so I decided use a rail-to-rail opamp LMC6482. They recomemnd an RC low pass filter after 1k so I just added C1 1u to form a low pass filter with 160Hz cut off. I will also add caps for the power rail of the opamp. Here is how I want to implement the circuit:
Is my way of buffering and the opamp type is correct in my dcircuit diagram? Is the cut off freq. good for this type of application.
Should I use an isolation amplifier as an opamp? I would like to isolate vane and the output. Can I use a HCPL-7800 ?