pancho_hideboo
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The averaged division ratio is calculated in the Fractional-N PLL feedback path like (1) of attached figure.
This scheme is well known.
However there is a different scheme like (2) of attached figure.
I don't know how to realize this scheme.
My questions are :
(a) What merit does this scheme have ?
A very fine frequency resolution with no residual frequency error ?
Enhanced randomnesss which can result in rare fractional spurious ?
(b) How to realize this scheme ?
Is there any document which can be helpful ?
This scheme is well known.
However there is a different scheme like (2) of attached figure.
I don't know how to realize this scheme.
My questions are :
(a) What merit does this scheme have ?
A very fine frequency resolution with no residual frequency error ?
Enhanced randomnesss which can result in rare fractional spurious ?
(b) How to realize this scheme ?
Is there any document which can be helpful ?