AMC1311-Q1: Two isolated OpAmps supplied by the same floating power supply measuring opposite voltage potential

I have replaced AMC1301 for AMC1311 for my voltage measurement.

Have used TINA to validate my design, but have found out AMC1311 TINA model ignores negative input range. Could you please confirm that AMC1311 TINA model has not been updated to consider negative input signals?

In my design, I have a DC-bus voltage split into POSitive and NEGative. Want to use a voltage devider to measure both POS and NEG voltage with respect to middle of the DC-bus.

TINA model is attached. As AMC1311 model ignores negative input voltage, everythings looks nice. But in reality, I'll get wrong negative signal measurement.

Could you please suggest how to modify my design to use the same floating power supply for both AMC1311 and measure both positive and negative voltage?

Thanks

Petr