in AMC1200 datasheet Figure 32 typical application diagram,
we have R2=12ohm, R3=12ohm,
My customer is using AMC1200 to measure AC phase current of a 3 phase rectifer just similar to the typical application.
But we find the error will be smaller if we make R2=24ohm, R3=0ohm.
Why do we suggest R2, R3 both 12ohm? What's the internal input stage circuit of AMC1200 that makes we suggest put 2 same ohm resistor to do the filter?