I have the following circuit, the INA122 instrumental amplifier. when RG pins are not connected, the default gain is 5. I am sure that the bridge is balanced, however, for the simulations, why there is a high offset at the output around 0.3V? I am new to the software, and would like to know why this happens, and how could i bring the output voltage to zero, as the diff is supposed to be 0.0mV. I tried to put the circuit into a breadboard, and it provides better results (Although, still not zero).
Are there any properties, such as offset voltage or voltage drift that I misread?