This is a simple board to analyze the current across a resistor. It has a programmable gain with changes to R1.

I built this with R1 = 510ohms

G = (49.4kΩ / RG ) + 1

Here are some links you will need:
https://www.analog.com/media/en/technical-documentation/data-sheets/1167fc.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/111214fb.pdf