AD8222 spice model not giving correct result with unipolar 5 volt powering

Can u explain what is differential input range for AD8222 when powered with 5 volt only, from datasheet it is not very clear and , when i simulate in LTspice  results looks like wrong.

how much negative differential input it can take for a given gain if single 5 volt powered.

Does current spice model of AD8222 is correct for single supply simulation

Thanks and Regards