tia_design
Advanced Member level 4
I designed a second-order sigma delat Converter. In my simulation, input is 500Hz sinwave, simulation time is 20ms. I did the dft for the same 1-bit output stream with different setups. And I got different results:
1. The data used for dft is from 2m to 6m, frequency data point is 4096, I got 80dB at 500Hz.
2. The data used for dft is from 2m to 18m, frequency data point is 8192, I got 45dB at 500Hz.
Problem here is, I don't know how to set up the waveform time window and how many points for dft.
Thanks for any comments!
1. The data used for dft is from 2m to 6m, frequency data point is 4096, I got 80dB at 500Hz.
2. The data used for dft is from 2m to 18m, frequency data point is 8192, I got 45dB at 500Hz.
Problem here is, I don't know how to set up the waveform time window and how many points for dft.
Thanks for any comments!