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AD7607 Anti Aliasing Filter performance improvement

Question asked by TGE on Nov 11, 2014
Latest reply on Nov 19, 2014 by jcolao



In the AD7607 datasheet they specify the input anti aliasing  filter as a second order Butterworth which should have a roll off of -12dB per octave, but doesn't come anywhere near the ~ -90dB required at Fn to ensure that any aliasing is below a few (LSB's). is there any multi-channel filter available that anyone can recommend  to fill this role ?