WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 150

• Manufacturer Part Number: WM8959
• Description: Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8959
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DE-EMPHASIS FILTER RESPONSES
Figure 91 De-Emphasis Digital Filter Response (32kHz)
Figure 93 De-Emphasis Digital Filter Response (44.1kHz)
Figure 95 De-Emphasis Digital Filter Response (48kHz)
-10
-10
-12
-10
-1
-2
-3
-4
-5
-6
-7
-8
-9
-2
-4
-6
-8
0
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
0
0
0
0
5000
5000
5000
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 92 De-Emphasis Error (32kHz)
Figure 94 De-Emphasis Error (44.1kHz)
Figure 96 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
6000
10000
MAGNITUDE(dB)
MAGNITUDE(dB)
MAGNITUDE(dB)
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
8000
15000
10000
15000
12000
20000
PP, May 2008, Rev 3.1
14000
20000
25000
Pre-Production
16000
25000
18000
30000
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