Cirrus Logic CS8422 - Manual (Page 74)

74 DS692F2
CS8422
-2 00
+ 0
-1 90
-1 80
-1 70
-1 60
-1 50
-1 40
-1 30
-1 20
-1 10
-1 00
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
5 k 45 k 1 0k 1 5k 2 0k 25 k 3 0k 35 k 4 0k
H z
-2 00
+ 0
-1 90
-1 80
-1 70
-1 60
-1 50
-1 40
-1 30
-1 20
-1 10
-1 00
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
10 k 90 k 2 0k 3 0k 4 0k 50 k 6 0k 70 k 8 0k
H z
Figure 56. Wideband FFT –
0 dBFS 80 kHz Tone, 192 kHz:192 kHz
Figure 57. Wideband FFT –
0 dBFS 20 kHz Tone, 48 kHz:96 kHz
-2 00
+ 0
-1 90
-1 80
-1 70
-1 60
-1 50
-1 40
-1 30
-1 20
-1 10
-1 00
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
2. 5k 22 .5 k 5 k 7 .5 k 1 0k 12 .5 k 1 5k 1 7. 5k 2 0k
H z
-2 00
+ 0
-1 90
-1 80
-1 70
-1 60
-1 50
-1 40
-1 30
-1 20
-1 10
-1 00
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
2. 5k 22 .5 k 5 k 7 .5 k 1 0k 12 .5 k 1 5k 1 7. 5k 2 0k
H z
Figure 58. Wideband FFT –
0 dBFS 20 kHz Tone, 48 kHz:48 kHz
Figure 59. Wideband FFT –
0 dBFS 20 kHz Tone, 96 kHz:48 kHz
-2 00
+ 0
-1 90
-1 80
-1 70
-1 60
-1 50
-1 40
-1 30
-1 20
-1 10
-1 00
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
2 k 2 2k 4 k 6k 8k 10 k 12 k 14 k 1 6k 1 8k 20 k
H z
-2 0 0
+ 0
-1 9 0
-1 8 0
-1 7 0
-1 6 0
-1 5 0
-1 4 0
-1 3 0
-1 2 0
-1 1 0
-1 0 0
-9 0
-8 0
-7 0
-6 0
-5 0
-4 0
-3 0
-2 0
-1 0
d
B
F
S
4 0 k 1 8 0 k 6 0 k 8 0 k 1 0 0 k 1 2 0 k 1 4 0 k 1 6 0 k
H z
T T
Figure 60. Wideband FFT –
0 dBFS 20 kHz Tone, 48 kHz:44.1 kHz
Figure 61. THD+N vs. Output Sample Rate –
0 dBFS 1 kHz Tone, Fsi = 192 kHz