Alexander wrote:
there is a current mode feedback device [which does not follows the gain bandwidth product role ] and has 1000V/usec rise time 92dB THD at 30MHz 3nV/rtHz noise
Yeah, but look at its 1/f input voltage noise corner -- it's at 2 or 3 MHz!!! So the baseband input noise density is over 1000nV/sqrtHz at 1Hz, with potentially devastating effects on the phase noise performance in phase measurement applications. (See Figures 18 and 56 of the cited datasheet.)
Even if the internal amplifier topology exhibits relatively low AM-PM conversion, starting that far behind is not a promising way to design a low-PN widget.
NFL Best regards, 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.
