Javad1991
Newbie level 4
Dear friends,
I have designed a continuous-time bandpass delta-sigma converter in cadence using ideal components.
As you know, these types of circuits include both analog (continuous-time) and digital (discrete-time) blocks.
I am trying to simulate the effect of jitter in my design. The problem is that all the digital blocks are ideal and respond fast (without rise or fall time) and are jitter-free.
In MATLAB Simulink, it's easy. I can open the loop and add a simple block, whose name is "band limited white noise" to my design, but how can I do the same in cadence virtuoso?
P.S. : It is not a good idea to add two inverters to the signal path, because it will only add rise/fall times and, of course, delay to my sigma-delta loop and is not equivalent to true jitter with a gaussian distribution!
As always, I look forward to hearing your ideas.
Many thanks
I have designed a continuous-time bandpass delta-sigma converter in cadence using ideal components.
As you know, these types of circuits include both analog (continuous-time) and digital (discrete-time) blocks.
I am trying to simulate the effect of jitter in my design. The problem is that all the digital blocks are ideal and respond fast (without rise or fall time) and are jitter-free.
In MATLAB Simulink, it's easy. I can open the loop and add a simple block, whose name is "band limited white noise" to my design, but how can I do the same in cadence virtuoso?
P.S. : It is not a good idea to add two inverters to the signal path, because it will only add rise/fall times and, of course, delay to my sigma-delta loop and is not equivalent to true jitter with a gaussian distribution!
As always, I look forward to hearing your ideas.
Many thanks
