Leila Sharifi
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Hi,
I am simulating a second-order delta-sigma modulator. my problem is that the simulation suddenly stops without reporting an error. in fact, simulation is still running but the time in log file doesn't change (even after several days!).
The sampling frequency is 2 MHz. I am going to simulate a 4096-point FFT. So I applied an input at the frequency of ((11*2 MHz)/4096). the maxstep and minstep are set to 10n and 0.1p respectively.
when I reduce the number of FFT points, I don't face this problem. but to have an accurate FFT, I need to simulate it with more points. for more information, I am using ideal switches in the circuit with Ron=1.5k and Roff=1G.
Could someone guide me for the same, please?
Thank you.
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