I just got a couple of these sensors and for the life of me I cannot figure out why the output voltage will not change.
The actual model I have is the MLX90251EVA-3-TU
I tried wiring it up as indicated on page 15 (section 12.1) of the datasheet. With the pullup it'd always read 5v, with the pulldown it'd always read 0v.
Then I tried just hooking 5v to pin 1, grounded pins 2 and 3 and pin 4 to analog input on arduino, and it always shows 2.5v.
I've tried using a refrigerator magnet and a rare earth magnet, so the gamut from weak to strong and nothing is changing. I'm pretty new to this, but I've managed to get a bunch of other sensors working (SCP1000, HMC6352, HIH-3030, etc) but this one is throwing me a curve.
Any help is appreciated.