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WM8941 데이터시트(PDF) 88 Page - Wolfson Microelectronics plc

부품명 WM8941
상세설명  Mono CODEC with Speaker Driver and Video Buffer
PDF  96 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8941 데이터시트(HTML) 88 Page - Wolfson Microelectronics plc

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WM8941
Pre Production
w
PP, Rev 3.3, December 2007
88
DIGITAL FILTER CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ADC Filter
+/- 0.025dB
0
0.454fs
Passband
-6dB
0.5fs
Passband Ripple
+/- 0.025
dB
Stopband
0.546fs
Stopband Attenuation
f > 0.546fs
-60
dB
Group Delay
21/fs
ADC High Pass Filter
-3dB
3.7
-0.5dB
10.4
High Pass Filter Corner
Frequency
-0.1dB
21.6
Hz
DAC Filter
+/- 0.035dB
0
0.454fs
Passband
-6dB
0.5fs
Passband Ripple
+/-0.035
dB
Stopband
0.546fs
Stopband Attenuation
f > 0.546fs
-55
dB
Group Delay
29/fs
Table 62 Digital Filter Characteristics
TERMINOLOGY
1.
Stop Band Attenuation (dB) – the degree to which the frequency spectrum is attenuated (outside audio band)
2.
Pass-band Ripple – any variation of the frequency response in the pass-band region
3.
Note that this delay applies only to the filters and does not include additional delays through other digital circuits. See
Table 63 for the total delay.
PARAMETER
MIN
TYP
MAX
UNIT
Total Delay (ADC analogue
input to digital audio interface
output)
28/fs
30/fs
32/fs
fs
Total Delay (Audio interface
input to DAC analogue
output)
33/fs
35/fs
37/fs
fs
Table 63 Total Group Delay
Notes
1.
Wind noise filter is disabled.



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