This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AMC1200: input RC filter

Part Number: AMC1200


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?