I looked at the DAC1220 first, but in an EFC application it worries me to no end that it is a Sigma-Delta DAC.
Even if I feed it a clock divided down from the OCXO you're EFC'ing, to avoid beatfrequency effects, I would still worry about harmonic effects and noise. Also, the noise-spec is pretty horrid, almost a microvolt/sqrt(Hz) all the way to one kHz. For comparison the AD5791 is purely static and its noise is below 10 nv/sqrt(Hz) from 5Hz and up. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ 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.
