Performance Plots; Figure 19.Fft - S/Pdif Input To Hp Output @ -1 Dbfs; Figure 20.Fft - S/Pdif Input To Hp Output @ -60 Dbfs; Figure 21.Thd+N Vs. Hp Output Power - Cirrus Logic CDB43L22 Manual

10.PERFORMANCE PLOTS

Test conditions (unless otherwise specified): Measurement bandwidth is 20 Hz to 20 kHz (unweighted);
VA=VD=VA_HP=1.8V; Sample Frequency = 48 kHz; HP test load: R
+0
-10
-20
-30
-40
-50
-60
d
B
-70
r
A
-80
-90
-100
-110
-120
-130
-140
20 50 100 200
Figure 19. FFT - S/PDIF Input to HP Output @ -1 dBFS
+0
-5
*Note 2
-10
-15
-20
-25
-30
-35
-40
d
-45
B
r
-50
A
-55
-60
-65
-70
-75
-80
-85
-90
-95
10m 20m 30m 40m
Figure 21. THD+N vs. HP Output Power
-40
-42.5
-45
-47.5
-50
-52.5
-55
-57.5
-60
-62.5
-65
-67.5
d
-70
B
-72.5
-75
-77.5
-80
-82.5
-85
-87.5
-90
-92.5
-95
-97.5
-100
20 50 100 200
Figure 23. THD+N - S/PDIF Input to HP Output
DS792DB1
500 1k 2k 5k 10k 20k
Hz
Gain
1.1430
1.000
0.8399
0.7099
0.6047
50m 60m 70m 80m 90m 100m
W
500 1k 2k 5k 10k 20k
Hz
= 16 Ω.
L
+0
-10
-20
-30
-40
-50
-60
d
B
-70
r
A
-80
-90
-100
-110
-120
-130
-140
20 50 100 200
Figure 20. FFT - S/PDIF Input to HP Output @ -60 dBFS
+3
+2.75
+2.5
+2.25
+2
+1.75
+1.5
+1.25
+1
+0.75
+0.5
d
+0.25
B
-0
r
-0.25
A
-0.5
-0.75
-1
-1.25
-1.5
-1.75
-2
-2.25
-2.5
-2.75
-3
20 50 100 200
Figure 22. Freq. Resp. - S/PDIF Input to HP Output
-40
-45
-50
-55
-60
-65
-70
-75
d
B
-80
r
A
-85
-90
-95
-100
-105
-110
-115
-120
20 50 100 200
Figure 24. Dynamic Range- S/PDIF Input to HP Output
CDB43L22
500 1k 2k 5k 10k 20k
Hz
500 1k 2k 5k 10k 20k
Hz
500 1k 2k 5k 10k 20k
Hz
29