I am measuring current of a 0.83mA with a Hall current sensor ACS273 100mV/A. I want to display this current as 8.3V. The problem is that in the datasheet of the ACS273 it is mentioned that no current output is 0.1*VCC=0.5V. at no current I want 0V. I have used opamp to get 8.3V from the output of ACS. how can I get rid of this extra 0.5V so that it does not get amplified. Ii also presume that no current voltage is added into the further voltages of ACS. i.e.
0.5V @ 0 Amp
0.5+y V @ x Amp