But to make that measurement you need an amplifier circuit designed for the thermocouple ... loop gain and very low input currents and input current errors. Analog Devices has a good write-up ...

The higher the current, the further away from the rails ... Rather than dig through a lot of math, you can deal with nearly all op amp circuits if you remember two simple rules: The inputs of ...

However is single stage amplifiers the contribution of various circuit elements to noise must be taken into ... component due carrier trapping at the oxide interface. Thermal noise current in MOSFET ...