Here's the datasheet: http://www.components.omron.com/components/web/PDFLIB.nsf/0/DEFC0948FE2A5C91862577A7005A8099/$file/2SMPP_1112.pdf I have the 2SMPP-03 model.
I picked up a few of these sensors for a breathalyzer project I'm putting together. I'm using these to detect if the user is blowing into the breathalyzer.
I think this sensor acts like a wheatstone bridge but I'm not quite sure. If someone could verify my assumption, I would appreciate it.
Also, I have no idea how much voltage I can supply this with, I plan on using 5 volts. Will I be ok with this voltage?
The last thing I'm not sure about is the drive current. Do I have to limit the amount of current going to this sensor?
Thanks in advance! Bill