> > to provide SFDR up to 150 dB (and I'd notice it if I were > > getting much less than that in practice.) > > has pushed me up! When I tell the compiler to generate me a 150 dB SFDR > DDS > then it produces an block with 28 (!) bits output witdh for the DAC. So, I > am asking myself what wonder-chips you may be using as DAC for your DDS > that > features a dynamic range high enough to really measure a 150 dB SFDR?
It's being used as part of a digital downconverter in my case, not driving a DAC. In this application, DDS artifacts would ultimately show up as spurs on phase noise plots or as ripple in ADEV plots. I haven't seen any unaccounted-for spurs above -130 to -140 dBc (where they could be coming from pretty much anywhere), so I've been happy with the core's real-world performance. -- john, KE5FX _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
