CDK-5581 Cirrus Logic Inc, CDK-5581 Datasheet - Page 22

• 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

Figure 16 illustrates the noise floor of the converter from 0.1 Hz to 100 kHz. While the plot does exhibit
some 1/f noise at lower frequencies, the noise floor is entirely free of spurious frequency content due to
digital activity inside the chip.
Figure 17 illustrates a noise histogram of 4096 samples.
22
-100
-120
-140
-160
-20
-40
-60
-80
0
0.1
900
800
700
600
500
400
300
200
100
1
0
-8 -7 -6 -5 -4 -3
Figure 16. Spectral Plot of Noise with Shorted Input
Figure 17. Noise Histogram (4096 Conversions)
10
3/25/08
14:34
-2 -1
Output (Codes)
Frequency (Hz)
100
0
1
2
3
1k
4
Mean = -0.61
Std. Dev = 2.33
Shorted Input
2M Samples @ 200 kSps
16 Averages
5
6
7
8
10k
CS5581
DS796PP1
100k