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sinara-hw / mirny

4-channel Microwave synthesiser
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Different supply for digital rails? #18

Closed hartytp closed 4 years ago

hartytp commented 5 years ago

Shouldn't the noisy PLL digital rails be run from a separate supply to the analog rails? E.g. run them directly from their own SMPSs.

hartytp commented 5 years ago

Maybe not needed if the digital interface is only used during configuration?

gkasprow commented 4 years ago

I'm a bit afraid of connecting it to the "digital" P3V3. I can replace the FB with an inductor that makes a low frequency filter.

gkasprow commented 4 years ago

obraz

hartytp commented 4 years ago

sure, whatever you think is best here...