3/25/08
10:56
CS5571
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.
0
-20
-40
-60
-80
-100
-120
-140
-160
0
5.55 kHz, 0 dB
32k Samples @ 100 kSps
10k
20k
30k
40k
50k
Frequency (Hz)
0
-20
-40
-60
-80
-100
-120
-140
-160
0
5.55 kHz, -6 dB
32k Samples @ 100 kSps
10k
20k
30k
40k
50k
Frequency (Hz)
Figure 11. Spectral Performance, 0 dB
Figure 12. Spectral Performance, -6 dB
0
-20
-40
-60
-80
-100
-120
-140
-160
0
5.55 kHz, -12 dB
32k Samples @ 100 kSps
10k
20k
30k
40k
50k
Frequency (Hz)
Figure 13. Spectral Performance, -12 dB
DS768PP1
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