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Develop analog high-pass filters without capacitors in the signal path (Part 2 of 2)

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bcarso
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re: Develop analog high-pass filters without capacitors in the signal path (Part 2 of 2)
bcarso   5/1/2008 11:44:20 AM
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This is an interesting approach, particularly the higher order realizations. To some extent I think the declaration that the capacitors are not in the signal path is at best semantic. I do however follow the early argument for the benefits of eliminating the input coupling caps for an inamp and their imbalancing effects. Also, one of the drawbacks of higher Z in the discussion of making the capaictors smaller is not mentioned, namely the increased noise. Of course there is only so much space.

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