kunalsan
Junior Member level 1
Hello
I am designing an Integer N PLL. For the phase noise of the entire PLL, which method is more efficient.
1. By using PSS and PNoise simulation in spectre
or
2. By using MATLAB code in which phase noise of individual block is used.
the formula used in MATLAB code is
PN_out = 10*log10(10.^(PN_out_ref/10)+10.^(PN_out_div/10)+10.^(PN_out_pcl/10)+10.^(PN_out_vco/10));
I am designing an Integer N PLL. For the phase noise of the entire PLL, which method is more efficient.
1. By using PSS and PNoise simulation in spectre
or
2. By using MATLAB code in which phase noise of individual block is used.
the formula used in MATLAB code is
PN_out = 10*log10(10.^(PN_out_ref/10)+10.^(PN_out_div/10)+10.^(PN_out_pcl/10)+10.^(PN_out_vco/10));