OK, I fixed the problem and i put the ZXCT1109 as shown in datasheet but i still have one problem.

If i want to get 0-5V output voltage and 0-10A sensing current i must put the Rsense of volue 10mE and Rgain 12,5kE, i get equations in datasheet.

But now i testnig the proper function of this measurments and i get 140mV in output with sense voltage 8,5mV and 410mV with sense voltage 16,4mV.

This is not what i want and not as calculated, it must be something wrong because i should get 0,5V in output with 1A (10mV sense voltage) current and so on, therefore 2A/V resolution??