CS8422
+0
-10
-20
-30
-40
-50
-60
-70
-80
d
B
F
S
-90
-1 00
-1 10
-1 20
-1 30
-1 40
-1 50
-1 60
-1 70
-1 80
-1 90
-2 00
2. 5k
5k
7 .5 k
1 0k
12 .5 k
Hz
1 5k
1 7. 5k
2 0k
22 .5 k
d
B
F
S
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-1 00
-1 10
-1 20
-1 30
-1 40
-1 50
-1 60
-1 70
-1 80
-1 90
-2 00
2. 5k
5k
7 .5 k
1 0k
12 .5 k
Hz
1 5k
1 7. 5k
2 0k
22 .5 k
图49.宽带FFT -
-60 dBFS的1 kHz音调， 96千赫48千赫
+0
-10
-20
-30
-40
-50
-60
-70
-80
d
B
F
S
-90
-1 00
-1 10
-1 20
-1 30
-1 40
-1 50
-1 60
-1 70
-1 80
-1 90
-2 00
2. 5k
5k
7 .5 k
1 0k
12 .5 k
Hz
1 5k
1 7. 5k
2 0k
22 .5 k
d
B
F
S
图50. IMD -
10 kHz和11 kHz的-7 dBFS的， 96千赫48千赫
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-1 00
-1 10
-1 20
-1 30
-1 40
-1 50
-1 60
-1 70
-1 80
-1 90
-2 00
2k
4k
6k
8k
1 0k
Hz
1 2k
1 4k
16 k
18 k
20 k
2 2k
图51.宽带FFT -
-60 dBFS的1 kHz音调， 192千赫48千赫
+0
-10
-20
-30
-40
-50
-60
-70
-80
d
B
F
S
-90
-1 00
-1 10
-1 20
-1 30
-1 40
-1 50
-1 60
-1 70
-1 80
-1 90
-2 00
2. 5k
5k
7 .5 k
1 0k
12 .5 k
Hz
1 5k
1 7. 5k
2 0k
22 .5 k
d
B
F
S
图52. IMD -
10 kHz和11 kHz的-7 dBFS的， 48千赫44.1千赫
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-1 00
-1 10
-1 20
-1 30
-1 40
-1 50
-1 60
-1 70
-1 80
-1 90
-2 00
2. 5k
5k
7 .5 k
1 0k
12 .5 k
Hz
1 5k
1 7. 5k
2 0k
22 .5 k
图53. IMD -
10千赫和11千赫-7 dBFS的， 44.1千赫： 48千赫
图54.宽带FFT -
0 dBFS的20 kHz音调， 44.1千赫48千赫
72
DS692PP2
CIRRUS [ CIRRUS LOGIC ]
