cortex M0 based mcu dac error

i i am developing cprtex mo based project.

vendor is nuvoton.

there  seems to be error  in dac.

can i reduce the error.

 my dac ouput for input code 000 is 130mv. whose full scale range is 2.5v.

datasheet has the  folllowing values ,the gain error for typical value 290 lsb offset error is 150lsb

  

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