EMRFD Message Archive 2372
Message Date From Subject 2372 2008-11-08 16:23:32 Michael Dunn Stupid filter question I've designed a 3rd-order cap-input LPF using Elsie, but I want to
convert it from single-ended to differential. Seems to me that
halving the L value and putting one in each line should do the trick.
2373 2008-11-08 16:31:55 Lasse Re: Stupid filter question Yes... if you do have the same impedance over the balanced ports as with
your "normal" filter
2374 2008-11-08 18:55:06 Michael Dunn Re: Stupid filter question Thanks!
I'm quite happy with myself ;-) I wanted to minimize impedance
variation, and after trying several different designs, I noticed that
Butterworth and Bessel were both pretty bad, but in different
directions (I think those were the ones). Anyway, I started playing
with values, and got to a point where the Z curve was essentially
flat! And the filter response was still good. Nice...
>Yes... if you do have the same impedance over the balanced ports as with
>your "normal" filter