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