Hello everyone,
I would like to run simulations just like in these 2 graphics but I dont know how to run it. In my project I have 4 v-bit sources as digital input that provides bit patterns, I also have AC input to run AC analysis. How can I run these simulations ? Which simulation type and how would provide me these graphics. I would like to see result exactly like in these graphics. 
Second question is how can I plot the graphic by using differential inputs ? Just like the graphic I provided below, I woud like to plot I2-I1 versus V2-V1. I am really confused what to sweep and how to sweep while bits are changing.
I have already checked forums but could not find helpful solution. Any help or tip would be appreciated. I use Cadence 6.1.6 and ADE L. Thank you