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Modeling >> Behavioral Models >> Bimodal distribution of Oscillator Jitter in Verilog A
https://designers-guide.org/forum/YaBB.pl?num=1309347983

Message started by Praveen K on Jun 29^th, 2011, 4:46am

Title: Bimodal distribution of Oscillator Jitter in Verilog A
Post by Praveen K on Jun 29^th, 2011, 4:46am

Hi,

I'm trying to model a oscillator in Verilog AMS with Deterministic jitter (DJp-p) and Random jitter(RJp-p). The total jitter should be TJ=DJp-p + RJp-p. According to literature, the TJ is a bimodal distribution with DJp-p being the difference between two means and RJs on both sides.

I can generate two normal distribution with -DJp-p/2 and +DJp-p/2 has mean and Rjp-p as std with the commands below,
dist1 = $rdist_normal(seed1,-DJp-p/2,RJp-p)
dist2 = $rdist_normal(seed2,DJp-p/2,RJp-p)

Now, I'm not sure how to arrive at the TJ value?

or is there a way to generate bimodal distribution in Verilog A. any comments would be of great help