I have set up a simple temprature measurement circuit as shown in the link provided. I am using a 5V supply and a 500K resistor. At room temperature i am getting an output of .2mV instead of the approx 200mV i expected. Does the lm35 chip need to be calibrated and can anyone tell me if the circuit shown is correct?
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Sensors/TempLM35.html
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Sensors/TempLM35.html