WM8772EDS Ver la hoja de datos (PDF) - Wolfson Microelectronics plc
Número de pieza
componentes Descripción
fabricante
WM8772EDS Datasheet PDF : 70 Pages
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Production Data
DIGITAL FILTER CHARACTERISTICS
PARAMETER
Passband
Passband ripple
Stopband
Stopband Attenuation
Passband
Passband ripple
Stopband
Stopband Attenuation
TEST CONDITIONS
MIN
ADC Filter
±0.01 dB
0
-6dB
0.5465fs
f > 0.5465fs
-65
DAC Filter
±0.05 dB
-3dB
f > 0.555fs
0.555fs
-60
Table 1 Digital Filter Characteristics
TYP
0.5fs
0.487fs
MAX
0.4535fs
±0.01
0.444fs
±0.05
WM8772
UNIT
dB
dB
dB
dB
DAC FILTER RESPONSES
0
-20
-40
-60
-80
-100
-120
0
0.5
1
1.5
2
2.5
Frequency (Fs)
Figure 1 DAC Digital Filter Frequency Response
– 44.1, 48 and 96KHz
0
-20
-40
-60
-80
0
0.2
0.4
0.6
0.8
Frequency (Fs)
Figure 3 DAC Digital Filter Frequency Response
– 192KHz
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
3
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Frequency (Fs)
Figure 2 DAC Digital Filter Ripple –44.1, 48 and 96kHz
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
1
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Frequency (Fs)
Figure 4 DAC Digital Filter Ripple – 192kHz
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PD Rev 4.1 October 2004
13
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