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WM8750LEFL/R Datasheet(PDF) 51 Page - Wolfson Microelectronics plc

Part # WM8750LEFL/R
Description  STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS
PDF  56 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8750LEFL/R Datasheet(HTML) 51 Page - Wolfson Microelectronics plc

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WM8750L
PP Rev 1.77 May 2003
51
-10
-8
-6
-4
-2
0
0
5000
10000
15000
20000
Frequency (Fs)
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0
5000
10000
15000
20000
Frequency (Fs)
Figure 39 De-emphasis Frequency Response (44.1kHz)
Figure 40 De-emphasis Error (44.1kHz)
-10
-8
-6
-4
-2
0
0
5000
10000
15000
20000
Frequency (Fs)
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0
5000
10000
15000
20000
Frequency (Fs)
Figure 41 De-emphasis Frequency Response (48kHz)
Figure 42 De-emphasis Error (48kHz)
HIGHPASS FILTER
The WM8750L has a selectable digital highpass filter in the ADC filter path to remove DC offsets. The filter response is
characterised by the following polynomial:
Figure 43 ADC Highpass Filter Response
1 - z-1
1 - 0.9995z-1
H(z) =
-15
-10
-5
0
0
0.0005
0.001
0.0015
0.002
Frequency (Fs)



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