Suppose I have an inverting op-amp (part of a trans-impedance amplifier circuit) that gives me a slightly-positive-but-small signal, and the output goes into a ADC. I have two choices:
Increase the Rf (feedback resistor) value which should amplify the output.
After recording from the ADC, use software to scale the value to "look" like I amplified by Rf.
Is there any difference between these two scenarios?