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WM8944BECS/R 数据表(PDF) 152 Page - Cirrus Logic

部件名 WM8944BECS/R
功能描述  Mono Low-Power CODEC with Video Buffer
PDF  165 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8944BECS/R 数据表(HTML) 152 Page - Cirrus Logic

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WM8944B
152
Rev 4.3
DIGITAL FILTER CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ADC Filter
Passband
+/- 0.05dB
0
0.454 fs
-6dB
0.5fs
Passband Ripple
+/- 0.05
dB
Stopband
0.546s
Stopband Attenuation
f > 0.546 fs
-60
dB
DAC Normal Filter
Passband
+/- 0.06dB
0
0.454 fs
-6dB
0.5 fs
Passband Ripple
0.454 fs
+/- 0.06
dB
Stopband
0.546 fs
Stopband Attenuation
F > 0.546 fs
-50
dB
DAC Sloping Stopband Filter
Passband
+/- 0.06dB
0
0.25 fs
+/- 1dB
0.25 fs
0.454 fs
-6dB
0.5 fs
Passband Ripple
0.25 fs
+/- 0.06
dB
Stopband 1
0.546 fs
0.7 fs
Stopband 1 Attenuation
f > 0.546 fs
-60
dB
Stopband 2
0.7 fs
1.4 fs
Stopband 2 Attenuation
f > 0.7 fs
-85
dB
Stopband 3
1.4 fs
Stopband 3 Attenuation
F > 1.4 fs
-55
dB
DAC FILTERS
ADC FILTERS
Mode
Group Delay
Mode
Group Delay
Normal
16.5 / fs
Normal
16.5 / fs
Sloping Stopband
18 / fs
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
Notes:
1.
The Group Delays are quoted with the DSP SE1, SE2, and SE3 filters disabled. Enabling the DSP SE1, SE2, and SE3 filters
will increase the Group Delay



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