XWM8728EDS/R Ver la hoja de datos (PDF) - Wolfson Microelectronics plc
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XWM8728EDS/R Datasheet PDF : 28 Pages
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WM8728
Production Data
INFINITE ZERO DETECTION
Setting the IZD register bit determines whether the device is automuted when a sequence of more
than 1024 ZEROS is detected.
REGISTER ADDRESS BIT
0011
8
Interface Control
Table 21 IZD Control
LABEL
IZD
DEFAULT
0
DESCRIPTION
Infinite ZERO detection circuit
control and automute control
0: Infinite ZERO detect disabled
1: Infinite ZERO detect enabled
DIGITAL FILTER CHARACTERISTICS
PARAMETER
Passband Edge
Passband Ripple
Stopband Attenuation
SYMBOL TEST CONDITIONS
MIN
-3dB
f < 0.444fs
f > 0.555fs
-60
Table 22 Digital Filter Characteristics
TYP
0.487fs
MAX
±0.05
UNIT
dB
dB
DAC FILTER RESPONSES
0.2
0
0.15
-20
0.1
-40
0.05
-60
0
-0.05
-80
-0.1
-100
-0.15
-120
0
0.5
1
1.5
2
2.5
Frequency (Fs)
Figure 15 DAC Digital Filter Frequency Response
-44.1, 48 and 96kHz
0
-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 16 DAC Digital Filter Ripple
-44.1, 48 and 96kHz
0.2
0
-20
-0.2
-40
-0.4
-60
-80
0
0.2
0.4
0.6
0.8
Frequency (Fs)
Figure 17 DAC Digital Filter Frequency Response
-192kHz
-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 18 DAC Digital Filter Ripple
-192kHz
w
PD Rev 4.2 April 2004
23
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