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SS495A Miniature Ratiometric Linear sensor with supply voltage 3.3V ?

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beduino:
Hello,
For some reason I'd like to apply supply voltage 3.3V to magnetic field radiometric sensor SS495A instead of recomended minimum 4.5V in its datasheet https://eu.mouser.com/datasheet/2/187/honeywell-sensing-sensors-linear-hall-effect-ics-s-947420.pdf to detect strong neodynium magnet passing nearby but a few centimeters away, so no need to make any kind of precise magnetic fields measurement, just detect magnet magnetic fields N/S direction.

It seams that after supplying such lower voltage 3.3V this SS495A sensor responds quite well, as well as null offset is in dthe middle of 3.3vcc, but since it looks like this sensor have built in amplifier, is it fine to power this thing with voltage ~1V less than its specs for radiometric output?  :-\



According to datasheet:
"Miniature Ratiometric Linear sensors have a ratiometric output voltage, set by the supply voltage. It varies in proportion to the strength of the magnetic field."

It will not be used in any life critical application, just to estimate wheel rotation speed with magnets glued to its ring.

I'm considering also other option - maybe instead of SS495A sensor use a loop of wire connected to opamp inputs and detect changing magnetic flux, but in this case I might be limited by minimum wheel speed, since electromagnetic pulse will depend on how fast wheel rotates - magnet speed, so it looks like Hall effect sensors like SS495A seams to be more usefull at low speeds aka minimum as low as 1km/h I expect?

What do you think?

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