A LM358AN op-amp is choosen to amplify a AC input signal by a gain of
2.0. The input signal ranges from -1V to +1V and from 0 mA to 16.7 mA. The amplified signal will be read by an analog pin of Arduino (10-bit ADC)
How should the input resistance values and feedback resistance values be selected? I understand if the resistances are too high, there will be input noise which I do not want. However power consumption should be as low as possible, since it will be running off batteries. So would it make sense to choose
R_feedback = 2k and
R_input = 1k for the inverting confifguration.
Between inverting and non-inverting, since only the RMS of the signal will be used, inverting the polarity does not matter. So would it be wiser to go with inverting, since it is better at rejecting common-mode noise?