On 1/25/18 1:18 PM, Hal Murray wrote:
lajeune...@mail.com said:
I'm sure you know the 1.8V supply regulators should not be fed from VDDA
(3.3V), but I'll mention it anyway.
usually, it's so that noise coupled back from the part doesn't back in
through the 1.8V.
If you have a (say) 5V supply and you generate 3.3Vdd with one regulator
and 1.8V with another regulator, you (should) have better isolation.
Trees rather than cascades.
Why not?
That sounds like the sort of issue I should understand but I'm coming up
blank.
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