Cirrus-logic CDB42L55 Manual de usuario Pagina 20

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20 DS773DB1
CDB42L55
-140
+0
-120
-100
-80
-60
-40
-20
d
B
F
S
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 14. FFT - Analog In to Digital Out - no input Figure 15. FFT Crosstalk - Analog In to Digital Out
@ -1 dBFS
-140
+0
-120
-100
-80
-60
-40
-20
d
B
F
S
20 20k50 100 200 500 1k 2k 5k 10k
Hz
-3
+0
-2.5
-2
-1.5
-1
-0.5
d
B
F
S
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 16. Freq. Response - Analog In to Digital Out Figure 17. Fade-to-Noise Linearity - Analog In to Digital
Out
-40
+40
-30
-20
-10
+0
+10
+20
+30
d
B
F
S
-125 +0-100 -75 -50 -25
dBr
-100
-60
-95
-90
-85
-80
-75
-70
-65
d
B
r
A
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Figure 18. THD+N vs. Freq. - Digital In to HP Out
Figure 19. THD+N vs. Amplitude - Digital In to HP Out
-100
-60
-95
-90
-85
-80
-75
-70
-65
d
B
r
A
-100 +0-80 -60 -40 -20
dBFS
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