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WM8980CGEFL/V 데이터시트(PDF) 116 Page - Wolfson Microelectronics plc

부품명 WM8980CGEFL/V
상세설명  Stereo CODEC with Speaker Driver and Video Buffer
PDF  123 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8980CGEFL/V 데이터시트(HTML) 116 Page - Wolfson Microelectronics plc

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WM8980
Pre-Production
w
PP, Rev 3.8, May 2012
116
5-BAND EQUALISER
The WM8980 has a 5-band equaliser which can be applied to either the ADC path or the DAC path.
The plots from Figure 65 to Figure 78 show the frequency responses of each filter with a sampling
frequency of 48kHz, firstly showing the different cut-off/centre frequencies with a gain of
12dB, and
secondly a sweep of the gain from -12dB to +12dB for the lowest cut-off/centre frequency of each
filter.
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
Figure 65 EQ Band 1 Low Frequency Shelf Filter Cut-offs
Figure 66 EQ Band 1 Gains for Lowest Cut-off Frequency
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
-15
-10
-5
0
5
10
15
Frequency (Hz)
Figure 67 EQ Band 2 – Peak Filter Centre Frequencies,
EQ2BW=0
Figure 68
EQ Band 2 – Peak Filter Gains for Lowest Cut-off
Frequency, EQ2BW=0
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
-15
-10
-5
0
5
10
15
Frequency (Hz)
Figure 69 EQ Band 2 – EQ2BW=0, EQ2BW=1



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