It is read V divided by the square root of Hertz. John ----- Original Message ----- From: "M. Warner Losh" <[EMAIL PROTECTED]> To: <[email protected]>; <[EMAIL PROTECTED]> Sent: Thursday, October 26, 2006 1:57 PM Subject: Re: [time-nuts] Comparison of Logic Standards for Clock Distribution
> In message: <[EMAIL PROTECTED]> > Dr Bruce Griffiths <[EMAIL PROTECTED]> writes: > : But the input voltage noise of the MAX477 is 5nV/rtHz, the corresponding > : value for a discrete transistor circuit may be as low as 1nV/rtHz. > > rtHz is a new one for me (I'm mostly a software dude). A quick google > search shows that this appears in lots of spec sheets as a measure of > noise (which I get from this context), but what is that exactly? > > http://www.ic-designs.com/ICDTechBrief1.pdf gives a nice detailed > account of how to calculate this number (V/RTHZ it says), but doesn't > define the base unit. I get the 'Hz' part, but not the 'rt' part. > Can someone provide a good reference? > > Warner > > > > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
