Hello,
For a given Fvco in LMX2582, the value of Kvco differs between TICs Pro (or Datasheet) and PLLatinum. (for example: For Fvco=4550, Kvco= 32.1 in TICsPRo and 39 in PLLatinum)
Which Kvco is more accurate?
Regards,
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Dean and Noel, I would like to thank you for your responses.
But I think there is a significant difference between the values of KVCO, please refer to the attached picture where I plot the values of KVCO for different Fvco with a 50 MHz step size, (72 points). It is obvious that the difference, although they are very similar at the frequencies included in the datasheet, for other frequencies they differ.
Since I'm calculating the LPBW, and it highly depends on the value of Kvco, so I'm interested to have the accurate one. I will adopt the values given by PLLatinum as suggested by you.
This code may fits more the values appeared in PLLatinum :
if (Fvco<3550)
Kvco = 22;
elseif (Fvco<=4150)
Kvco = 22+(37-22)*(Fvco-3550)/(4150-3550);
elseif (Fvco<4600)
Kvco = 28.5+(40.5-28.5)*(Fvco-4150)/(4600-4150);
elseif (Fvco<5100)
Kvco = 29.311+(43-29.311)*(Fvco-4600)/(5100-4600);
elseif (Fvco<5600)
Kvco = 33.405+(43-33.405)*(Fvco-5100)/(5600-5100);
elseif (Fvco<6100)
Kvco = 38.275+(48-38.275)*(Fvco-5600)/(6100-5600);
elseif (Fvco<=6600)
Kvco = 42.569+(53.312-42.569)*(Fvco-6100)/(6600-6100);
elseif (Fvco<7100)
Kvco = 48+(58-48)*(Fvco-6600)/(7100-6600);
else
Kvco = 58;
end
Regards,