Figure 18. thd+n vs. freq. - digital in to hp out, Cdb42l56, Figure 15 – Cirrus Logic CDB42L56 User Manual
Page 22: Figure 19, Fft crosstalk - analog in to digital out @ -1 dbfs, Thd+n vs. amplitude - digital in to hp out
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DS851DB1
CDB42L56
-140
+0
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
-140
+0
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
20
20k
50
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
-5
+5
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
+0
+0.5
+1
+1.5
+2
+2.5
+3
+3.5
+4
+4.5
d
B
F
S
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
-40
+40
-35
-30
-25
-20
-15
-10
-5
+0
+5
+10
+15
+20
+25
+30
+35
d
B
F
S
-140
+0
-120
-100
-80
-60
-40
-20
dBr
T
TTTT
T
T
T T
Figure 16. Freq. Response - Analog In to Digital Out
Figure 17. Fade-to-Noise Linearity - Analog In to Digital
Out
-100
-60
-98
-96
-94
-92
-90
-88
-86
-84
-82
-80
-78
-76
-74
-72
-70
-68
-66
-64
-62
d
B
r
A
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
-100
-60
-98
-96
-94
-92
-90
-88
-86
-84
-82
-80
-78
-76
-74
-72
-70
-68
-66
-64
-62
d
B
r
A
-120
+0
-100
-80
-60
-40
-20
dBFS
Figure 18. THD+N vs. Freq. - Digital In to HP Out
Figure 19.
THD+N vs. Amplitude - Digital In to HP Out