https://www.microchip.com/en-us/product/PL500-16 (there's various other versions depending on the frequency you're after)
Haven't seen any discussion about this on-list, but the PL500 is an easily (well, in normal times) available VCXO control chip, for those who might want to make their own disciplined oscillator, especially at less standard frequencies. I had some arrive today and put the board I've designed as an OCXO, and was able to trim +/- ~3kHz (around 26MHz nominal in my case, pretty much the expected +/- 150ppm), all really easily. I can't yet say much about quality as it turned out I'd put the wrong regulator footprint on the board, and with no local regulation the power rail was jumping all over the place, once I actually fix that and hopefully get it mounted in its intended enclosure for thermal control it'll be interesting how it goes (yes this was the project I was hoping to use my SR620 to monitor the other week). _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
