I think most people use just one regular and then use bypass caps that are physically close to the power pins. Being really close is likely the most important point.
What matters as much or even more is the design of the ground system. The Vcc pins are actually easier to take care of, I think, because you can just bypass them. but you obviously can't use a bypass can in a ground pin. On the ground side you have to think about inductance of the traces. On Sat, Mar 15, 2014 at 6:10 PM, d0ct0r <[email protected]> wrote: > > Hello, > > By design, DDS "stones" like AD9852 from Analog Devices, required > separated power lines for AVDD, DVDD and VCC. > What will is simple solution for that ? I am planing to use following > approach: +5V from linear PS, then three LC filters, then three 3.3V > voltage regulators (Ex.: MC33269T) connected to each filter. Is it good > enough ? > > > May be its better solution for this ? Or may be that could be simplified > to join AVDD and VCC (AVDD will be connected to VCC via 100 Ohm). Thanks in > advance ! > > -- > WBW, > > V.P. > _______________________________________________ > 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. > -- Chris Albertson Redondo Beach, California _______________________________________________ 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.
