I'm only using 3.3V, not 5V. I don't know how much current would come from that so I may have destroyed the sensor. So, I should use an op-amp to get a constant current source? I'll look over the example again, as I didn't realize that. I'm pretty naive to the electronics but I'm slowly getting there. It was confusing on the datasheet, cause I think it wants 2.5V for power, but the mouser page had it listed as 5V. And then it mentions current, so I assume it's somewhere in that range but current needs to stay constant.
Good point, I should check output directly from the sensor.
You are suggesting that I put a potentiometer and take the power source and divide the voltage and read the inputs? I think I checked the analog inputs on another sensor, but I should double-check that cause I can't quite remember. I'm pretty sure I get 0 connected to A-REF, and a 65535 connecting to 3.3V power pin.
Currently my analog input is hovering around 20,000, which should be at about 1V ((65536/2000) / 3.3).
Thanks.