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ADIsimPLL Phase Noise - Technical Details and Block Diagram

Question asked by Ter on Jan 22, 2017
Latest reply on Jan 26, 2017 by PeterW

ADIsimPLL has a block diagram for the phase noise technical details (see help menu, frequency domain, phase noise technical details) which states that nPD(s) -phase noise from the PLL chip - includes phase detector noise and divider noise.  Does nPD(s) include both the reference divider noise and the main divider noise for nPD(s)?

 

ADIsimPLL graphs the chip noise,. but out of curiosity what do the the individual noise components of the PLL chip (phase detector, charge pump, reference divider, and main divider) look like? What is the dominant noise source of the chip?  Is this the charge pump noise?

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