adc2:simulations:fft_freq_mismatch
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fft freq mismatch
- fsampling = 20 Msps
- fin ~= 3Mhz (2459 peak)
- FFT len 16384
- fbase = 20e6/16384 ~= 1220.703125 Hz
| diff [hz] | % fbase | left [dB] | right [dB] | SINAD [dB] | THD [dB] | SNHR [dB] | SFDR [dB] |
|---|---|---|---|---|---|---|---|
| -207.52 | -17.00 | -13.8 | -16.8 | 10.0 | -68.8 | 10.0 | 13.8 |
| -109.86 | -9.00 | -20.1 | -21.7 | 15.7 | -74.2 | 15.7 | 20.1 |
| -61.04 | -5.00 | -25.6 | -26.4 | 20.8 | -79.3 | 20.8 | 25.6 |
| -36.62 | -3.00 | -30.2 | -30.7 | 25.3 | -83.7 | 25.3 | 30.2 |
| diff [hz] | % fbase | left [dB] | right [dB] | SINAD [dB] | THD [dB] | SNHR [dB] | SFDR [dB] |
|---|---|---|---|---|---|---|---|
| 36.62 | 3.00 | -30.7 | -30.2 | 25.3 | -83.6 | 25.3 | 30.2 |
| 61.04 | 5.00 | -26.4 | -25.6 | 20.8 | -79.1 | 20.8 | 25.6 |
| 109.86 | 9.00 | -21.7 | -20.1 | 15.7 | -74.0 | 15.7 | 20.1 |
| 207.52 | 17.00 | -16.8 | -13.8 | 10.0 | -68.5 | 10.0 | 13.8 |
/services/www/http/wiki/data/attic/adc2/simulations/fft_freq_mismatch.1258754267.txt.gz · Last modified: 2019/03/08 14:06 (external edit)
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