hello

how does one make eye diagrams in cadence ? spectre or spectre rf ?

thanks

You can also use verilog-A
there is an eye_diagram_generator in rfExamples - or rfLib.. this works on a timer.. but if your recieve clock is from a locked pll with some jitter model, you might want one that resets based on a trigger signal.

you might check bmslib (ships with IC5.033 and above) to if the clocked version made it in there..

this generates two signals.. a horizontal sweep and vertical signal and you use those to do plot the vertical vs the horizontal..  to see the eye diagram..

Of course if you are interested in ensuring a sufficient eye-opening, you might rather check that directly..
which requires a different verilog-A or AMS model.

Jbd