I am measuring the current from a battery (12v) using a shunt resistor. But if i can i want to use the normal rail as supply for the op-amp:
Now my thinking is that because of the two voltage-dividers (r311/r314 and r312/r315), my non-inverting input will be closer to 1.8v than to 0, and my inverting input will 'start off' at 0v and then be pulled to ~1.8v by the op-amp.
Is this possible, or am i forgetting something? I didn't find any reading on this anywhere.