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WM8772SEDS/V データシート(PDF) 14 Page - Wolfson Microelectronics plc

部品番号 WM8772SEDS/V
部品情報  24-bit, 192kHz 6-Channel Codec with Volume Control
PDF  73 Pages
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メーカー  WOLFSON [Wolfson Microelectronics plc]
ホームページ  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8772SEDS/V データシート(HTML) 14 Page - Wolfson Microelectronics plc

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WM8772
Production Data
w
PD Rev 4.2 October 2005
14
ADC FILTER RESPONSES
-80
-60
-40
-20
0
0
0.5
1
1.5
2
2.5
3
Frequency (Fs)
-0.02
-0.015
-0.01
-0.005
0
0.005
0.01
0.015
0.02
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Frequency (Fs)
Figure 5 ADC Digital Filter Frequency Response
Figure 6 ADC Digital Filter Ripple
ADC HIGH PASS FILTER
The WM8772EDS has a selectable digital high pass filter to remove DC offsets. The filter response is characterised by the
following polynomial.
1
1
9995
.
0
1
1
)
(
−
−
−
−
=
z
z
z
H
DIGITAL DE-EMPHASIS CHARACTERISTICS
-10
-8
-6
-4
-2
0
0
2
4
6
8
10
12
14
16
Frequency (kHz)
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
0
2
4
6
8
10
12
14
16
Frequency (kHz)
Figure 7 De-Emphasis Frequency Response (32kHz)
Figure 8 De-Emphasis Error (32KHz)



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