wm8987 Wolfson Microelectronics plc, wm8987 Datasheet - Page 51
wm8987
Manufacturer Part Number
wm8987
Description
Stereo Codec For Portable Audio Applications
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8987.pdf
(59 pages)
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Quantity
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Part Number:
wm8987G
Manufacturer:
WOLFSON
Quantity:
20 000
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Production Data
Figure 34 ADC Digital Filter Frequency Response – Type 2
Figure 36 ADC Digital Filter Frequency Response – Type 2
Figure 38 De-emphasis Frequency Response (32kHz)
w
DE-EMPHASIS FILTER RESPONSES
-100
-20
-40
-60
-80
-100
0
-20
-40
-60
-80
-10
-2
-4
-6
-8
0
0
0
0
0
2000
0.5
0.5
4000
1
1
6000
Frequency (Fs)
Frequency (Fs)
Frequency (Fs)
1.5
8000
1.5
10000
2
2
12000
2.5
2.5
14000
16000
3
3
Figure 35 ADC Digital Filter Ripple – Type 2
Figure 37 ADC Digital Filter Ripple – Type 3
Figure 39 De-emphasis Error (32kHz)
-0.05
-0.15
-0.25
0.25
0.15
0.05
-0.1
-0.2
0.2
0.1
-0.05
-0.15
-0.25
0.25
0.15
0.05
-0.1
-0.2
-0.1
-0.2
-0.3
-0.4
0
0.2
0.1
0.4
0.3
0.2
0.1
0
0
0
0
0
2000
0.05
0.05
4000
6000
0.1
Frequency (Fs)
0.1
Frequency (Fs)
Frequency (Fs)
8000
0.15
0.15
10000
PD Rev 4.0 August 2008
12000
0.2
0.2
WM8987L
14000
16000
0.25
0.25
51
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