I can't get this device to work.
I have built it exactly as is in the data sheet.
I am using a thermocouple K as input sensor. Gain = 100, RF = 100k, RG = 2k (I also tried with 10k & 200)
The output is approx zero.
I have added an output offset as described in the data sheet (300mV).
Vout = +5V, Vpin 7 = 300mV. I have replaced RT7 & RT14 with 10M resistors. (Bias current path)
see attached schematic
I have 6 boards behaving the same way
Any suggestions?
the eval board is obsolete, so I can't buy it to try
thank you
Fausto
