Cs8421 – Cirrus Logic CS8421 User Manual
Page 27
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DS641F6
27
CS8421
CS8421
-200
+0
-180
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
20k
80k
40k
60k
Hz
-200
+0
-180
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
10k
40k
20k
30k
Hz
Figure 33. Wideband FFT Plot (16k Points) 0 dBFS
80 kHz Tone, 192 kHz:192 kHz
-200
+0
-180
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
5k
20k
10k
15k
Hz
-200
+0
-180
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
5k
20k
10k
15k
Hz
Figure 35. Wideband FFT Plot (16k Points) 0 dBFS
20 kHz Tone, 48 kHz:48 kHz
-200
+0
-180
-160
-140
-120
-100
-80
-60
-40
-20
d
B
F
S
2.5k
20k
5k
7.5k
10k
12.5k
15k
17.5k
Hz
-150
-120
-147.5
-145
-142.5
-140
-137.5
-135
-132.5
-130
-127.5
-125
-122.5
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
Figure 37. Wideband FFT Plot (16k Points) 0 dBFS
20 kHz Tone, 48 kHz:44.1 kHz
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