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PCB Layout of the AD8221 - EVAL

Question asked by xcuresme on Jun 25, 2013
Latest reply on Jun 25, 2013 by krisf

Hi, guys~


I have something unclear about the PCB layout of the AD8221-EVAL. It is about the input paths.


In my opinion, the input paths should be close enough to reduce the induction by the noise. And if needed, there should be a ground plane between these two input paths to reduce the crosstalk.


But according to the datasheet of  AD8221 (shown in the attachment), we find that these two input paths are separated of purpose and no ground plane between them. Could anyone explain the reason for me?


Thanks in advance.