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By saoni
Hi Folks,

I am intending to build a flex 2-layer PCB including ATSAML21(WLCSP) as the microcontroller. I chose this microcontroller due to its embedded opamp functionality that I want to take advantage of.
The idea of the project is to build a small size power efficient flexible PCB for quick measurements.

Question: In order to configure the opamp as an instrumentation amplifier or a transimpedance amplifier, I am confused with the schematic design. I would really appreciate some feedback on the schematic I have attached for the same purpose.

Thanks in advance,

Kind Regards,