Hi all, I'm looking for a solution for galvanic isolation of a 1PPS signal-input to a distribution amplifier.
We have an old box using HCPL-2411 at the input followed by 74LS04, but the degraded rise-time (from below 3ns out of a clock, to >12 ns out of the box) and increased jitter (from below TIC-resolution of 20ps out of the clock to 700ps std.dev at 100s out of the box) are now limiting our measurements. Does anyone have experience with a circuit with good rise-time and low jitter? Should I look for better optoisolators, or pulse-transformers, or something else? thanks for your input! Anders PS. I started on publishing my distribution-amplifier (non isolated) on the ohwr.org site, see https://www.ohwr.org/projects/pda-8ch-fda-8ch/wiki/wiki _______________________________________________ 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.
