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Originally Posted by Alan Anderson
No, they produce digital(The application note strongly suggests filters on the supply and the output, but you can ignore them if you're not concerned about electrical noise.)
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I looked at the output on our 100mhz scope and did not see any noticeable noise when the sensor was looking at the output sprocket of the kit gearbox. The sensor was on the end of a 36" PWM cable. It may be worse if you tried it on one of the internal gears that moved a lot faster.