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WM8904ECS/R Datenblatt(PDF) 30 Page - Wolfson Microelectronics plc

Teilenummer WM8904ECS/R
Bauteilbeschribung  Ultra Low Power CODEC for Portable Audio Applications
PDF  188 Pages
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Hersteller  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8904ECS/R Datenblatt(HTML) 30 Page - Wolfson Microelectronics plc

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WM8904
Pre-Production
w
PP, Rev 3.3, September 2012
30
DIGITAL FILTER CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ADC Filter
Passband
+/- 0.05dB
0
0.454 fs
-6dB
0.5 fs
Passband Ripple
+/- 0.05
dB
Stopband
0.546s
Stopband Attenuation
f > 0.546 fs
-60
dB
DAC Normal Filter
Passband
+/- 0.05dB
0
0.454 fs
-6dB
0.5 fs
Passband Ripple
0.454 fs
+/- 0.03
dB
Stopband
0.546 fs
Stopband Attenuation
F > 0.546 fs
-50
dB
DAC Sloping Stopband Filter
Passband
+/- 0.03dB
0
0.25 fs
+/- 1dB
0.25 fs
0.454 fs
-6dB
0.5 fs
Passband Ripple
0.25 fs
+/- 0.03
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



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