PLL噪声仿真

yzx90333

现在大家都是怎么仿真环路的噪声？是用分别提取然后MATLAB/ADS处理那一套还是就直接在AMS仿真器上建模？

gongjiang

Typically, I simulate the pll in both AMS and spectre. For fast simulation, configure analog blocks to SystemVerilog. You can also add jitter to your analog blocks in SystemVerilog. Then you can extract the output zero-crossing point for psd plot. Once the AMS is verified, I purely run transient noise of the system in spectre and do psd again to check the phase noise.

toctory

回复 2# gongjiang


   这个靠谱。
算一算基本就很准了。

Know_How

用matlab处理用的比较多

shadowsun

回复 1# yzx90333

用 cadence 的理想model直接建模就可以了， 不需要matlab