On 12/11/2018 11:30 AM, jimlux wrote:
Most of the Silabs parts are available in an I2C programmable version rather than the factory programmed flavor.
That's for clarifying that. The web site is hard to navigate. I see that the phase noise is not even close to an HP 8662 and the VCXO versions (not surprisingly) are noisier. The phase noise of the XO is worse than the worst Crystek XO, and the VCXO is worse than the worst Crystek VCXO. The modulation BW is only 10 kHz, and you can't lock them to an external reference frequency. I suspect the chip has an onboard oven providing both fine tuning and temperature correction. Nothing especially profound about this architecture. It is not clear from the block diagram if the "DCO" refers to a DDS, or whether there is some frac-N mechanism. The performance is in the general ballpark of the one chip synthesizers with on board VCOs when those are locked to a clean reference. Rick _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
