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ADE7880: antialiasing filter

Question asked by Mr.K on Jun 29, 2015
Latest reply on Jun 30, 2015 by hmani

Hello,

 

I have a question about the antialiasing filter of ADE7880.

 

In the evaluation board of ADE7880, the attenuation network is used to the voltage sense inputs.

The network is low-pass filter with a corner frequency of 72KHz.

 

In the data sheet of ADE7880, it is recommended that the RC filter with a corner frequency of 5KHz be used.

Should I design the attenuation network with the corner frequency of 5KHz?

Or, should I add the RC filter with the corner frequency of 5KHz to the attenuation network of the same value as the evaluation board?

 

Best Regards,

Mr.K

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