CDK-5581 Cirrus Logic Inc, CDK-5581 Datasheet - Page 21

• Manufacturer Part Number: CDK-5581
• Description: Audio Modules & Development Tools KIT CDB558 w/ Capture Plus II
• Manufacturer: Cirrus Logic Inc

Specifications of CDK-5581

• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figures 11 through 16 illustrate the performance of the CS5581 when driven by a 5.55 kHz sine wave at
various amplitudes. 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.
Figure 14 illustrates the converter performance with an input that is 1/10,000 of full scale. This is a signal
magnitude of about 6.5 codes, peak to peak.
Figure 15 illustrates the converter performance with an input that is 1/100,000 of full scale, or about 0.65
of a code, peak to peak. These plots illustrate that this converter has excellent small-signal performance
due to the near-perfect DNL of the converter.
DS796PP1
-100
-120
-140
-160
-100
-120
-140
-160
-20
-40
-60
-80
-20
-40
-60
-80
0
0
Figure 13. Spectral Performance, -12 dB
Figure 11. Spectral Performance, 0 dB
0
0
20k
20k
Frequency (Hz)
Frequency (Hz)
40k
40k
-100
-120
-140
-160
5.55 kHz, 0 dB
32k Samples @ 200 kSps
5.55 kHz, -12 dB
32k Samples @ 200 kSps
60k
60k
-20
-40
-60
-80
0
Figure 15. Spectral Performance, -100 dB
0
80k
80k
20k
100k
100k
3/25/08
14:34
Frequency (Hz)
40k
-100
-120
-140
-160
-100
-120
-140
-160
5.55 kHz, -100 dB
32k Samples @ 200 kSps
-20
-40
-60
-80
-20
-40
-60
-80
60k
0
0
Figure 14. Spectral Performance, -80 dB
Figure 12. Spectral Performance, -6 dB
0
0
80k
20k
20k
100k
Frequency (Hz)
Frequency (Hz)
40k
40k
5.55 kHz, -6 dB
32k Samples @ 200 kSps
5.55 kHz, -80 dB
32k Samples @ 200 kSps
60k
60k
80k
80k
CS5581
100k
100k
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