Cirrus Logic CS5571 - Manual (Page 21)

CS5571
DS768PP1 21
3/25/08
10:56
Figures 11, 12, and 13 indicate the spectral performance of the CS5571 with a 0 dB, -6 dB and - 12 dB
5.55 kHz input signal. In each case, the captured data was windowed with a seven-term window function
that exhibits 4.3 dB of attenuation before being processed by the FFT.
-160
-140
-120
-100
-80
-60
-40
-20
0
0 10k 20k 30k 40k 50k
Frequency (Hz)
5.55 kHz, -12 dB
32k Samples @ 100 kSps
-160
-140
-120
-100
-80
-60
-40
-20
0
0 10k 20k 30k 40k 50k
Frequency (Hz)
5.55 kHz, -6 dB
32k Samples @ 100 kSps
-160
-140
-120
-100
-80
-60
-40
-20
0
0 10k 20k 30k 40k 50k
Frequency (Hz)
5.55 kHz, 0 dB
32k Samples @ 100 kSps
Figure 11. Spectral Performance, 0 dB Figure 12. Spectral Performance, -6 dB
Figure 13. Spectral Performance, -12 dB