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WM8980CGEFL/V bảng dữ liệu(PDF) 116 Page - Wolfson Microelectronics plc

tên linh kiện WM8980CGEFL/V
Giải thích chi tiết về linh kiện  Stereo CODEC with Speaker Driver and Video Buffer
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
Trang chủ  http://www.wolfsonmicro.com
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WM8980CGEFL/V bảng dữ liệu(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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