Your assumptions about my comment are unfounded. It was just intended as an additional reason as to why direct connection to a comparator input isnt a good idea with a high source impedance. The original post asked why a buffer was needed.
Bruce > > On 21 June 2017 at 22:14 Charles Steinmetz <csteinm...@yandex.com> wrote: > > Bruce wrote: > > > > > > If the source impendance at dc is 10k at dc a bias current of a few > > microamp produces a dc offset of tens of millivolts which may be an > > issue if the signal amplitude is low and has a low slew rate. > > > > > > Jeez, Bruce, it was nothing but a thought experiment to illustrate why > an amplifier's DC input current is not a reliable proxy for input > impedance It was not a suggestion for how to design an amplifier input. > And that should have been obvious to you -- I'm sure it was to > everyone else. > > Get a life. > > Charles > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
