D. Jeff Dionne writes: > On Feb 4, 2019, at 14:25, Achim Gratz <[email protected]> > wrote: > >> The Si5351 needs something between 25MHz and 27MHz as reference. > > That isn't true.
Well, that's what the datasheet says. :-) > Even the B version works just fine with a OCXO input > directly. See my thread here: > https://www.silabs.com/community/timing/forum.topic.html/si5351_msop10_packag-wocK I suspected as much, I just wasn't sure how much leeway I had. The discussions I've read so far didn't cover that aspect specifically, so thanks for giving me this link. > The problem is the Silicon Labs software to calculate the registers > flags an error, so you have to calculate them yourself. This is not > hard, there are programs and references on the web. I wasn't planning on using their software, so that hurdle is out of the way also. >> I'm currently mulling if it's worth the risk going slightly lower, as >> there are nice and cheap OCXO at 24.576MHz I could actually buy, >> whereas my options at the actual range boil down to just a single >> unit (I've only looked at two distributors, though). > > That will certainly derisk the design, but it will not solve the > SiLabs software issue. Having used this approach, I can say my > sampling of Si5351 chips with 10MHz OCXO all worked just fine, so > 24.576MHz certainly will. OK, so I have probably even more options to chose from. That's very welcome news. Thanks for your input! Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Wavetables for the Waldorf Blofeld: http://Synth.Stromeko.net/Downloads.html#BlofeldUserWavetables _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
