I am working with a thermopile detector from Dexter Now the problem I am having is that the output of the detector is in th range of microvolts and it needs to be amplified to 3.3V I am using 4 tlc2652 opamps (in first stage) and an opa4277 quad opamp i the second stage. The opamps are in noninverting mode. Capacitors are als attached for filteration.
Now I am having a lot of trouble with the circuit and therefore I wa looking for an of the shelf amplification and filteration module offerin amplification from microvolts to round about 5V. Are there an manufacturers developing such modules for sensors.