wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 197

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

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Pre-Production
DE-EMPHASIS FILTER RESPONSES
Figure 95 De-Emphasis Digital Filter Response (32kHz)
Figure 97 De-Emphasis Digital Filter Response (44.1kHz)
Figure 99 De-Emphasis Digital Filter Response (48kHz)
-10
-10
-12
-10
-1
-2
-3
-4
-5
-6
-7
-8
-9
-2
-4
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-8
0
0
-1
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-9
0
0
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0
5000
5000
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10000
10000
MAGNITUDE(dB)
Frequency (Hz)
MAGNITUDE(dB)
MAGNITUDE(dB)
Frequency (Hz)
Frequency (Hz)
10000
15000
15000
20000
15000
20000
25000
20000
25000
30000
Figure 96 De-Emphasis Error (32kHz)
Figure 98 De-Emphasis Error (44.1kHz)
Figure 100 De-Emphasis Error (48kHz)
-0.05
-0.15
-0.05
-0.05
-0.15
0.25
0.15
0.05
0.15
0.05
0.15
0.05
-0.1
-0.1
-0.1
0.3
0.2
0.1
0.1
0.2
0.1
0
0
0
0
0
0
2000
5000
5000
4000
10000
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10000
MAGNITUDE(dB)
MAGNITUDE(dB)
MAGNITUDE(dB)
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
8000
15000
10000
15000
12000
20000
PP, April 2009, Rev 3.0
14000
20000
25000
WM8400
16000
18000
30000
25000
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