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WM8721 Arkusz danych(PDF) 31 Page - Wolfson Microelectronics plc

Numer części WM8721
Szczegółowy opis  Internet Audio DAC with Integrated Headphone Driver
PDF  37 Pages
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Producent  WOLFSON [Wolfson Microelectronics plc]
Strona internetowa  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8721 Arkusz danych(HTML) 31 Page - Wolfson Microelectronics plc

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Production Data
WM8721 / WM8721L
w
PD Rev 4.0 November 2004
31
Note: All other bits not explicitly defined in the register table should be set to zero unless
specified otherwise (see Powerdown section).
DIGITAL FILTER CHARACTERISTICS
The DAC employs different digital filters. There are 4 types of digital filter, called Type 0, 1, 2 and 3.
The performance of Types 0 and 1 is listed in the table below, the responses of all filters is shown in
the proceeding pages.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC Filter Type 0 (USB mode, 250fs operation)
+/- 0.03dB
0
0.416fs
Passband
-6dB
0.5fs
Passband Ripple
+/-0.03
dB
Stopband
0.584fs
Stopband Attenuation
f > 0.584fs
-50
dB
DAC Filter Type 1 (USB mode, 272fs or Normal mode operation)
+/- 0.03dB
0
0.4535fs
Passband
-6dB
0.5fs
Passband Ripple
+/- 0.03
dB
Stopband
0.5465fs
Stopband Attenuation
f > 0.5465fs
-50
dB
Table 21 Digital Filter Characteristics



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