I am using the LMT84 in a project and they seem to read about 15 F high(so at 75 Degrees it reads 90). It is not just in my circuit but also when I sampled 2 or 3 from the batch they all read about 15 degrees higher than the actual temperature. I even powered them from a bench supply and read the voltage with a voltmeter and got the same results. I am using the TO92 and bought the batch from Digikey. I adjusted the reading in software to compensate for the error but we are now thinking about spinning boards and I would like to resolve this before we spin boards. Any suggestion as to what I can do to figure out why this is happening?
I did check my calculation and just looked at the mV reading and compared that to the table in the data sheet and the table matches my calculations.