WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 99

• Manufacturer Part Number: WM8978
• Description: The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

Preliminary Technical Data
DIGITAL FILTER CHARACTERISTICS
Table 64 Digital Filter Characteristics
TERMINOLOGY
1.
2.
w
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
High Pass Filter Corner
Frequency
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
ADC Filter
DAC Filter
ADC High Pass Filter
Stop Band Attenuation (dB) – the degree to which the frequency spectrum is attenuated (outside audio band)
Pass-band Ripple – any variation of the frequency response in the pass-band region
PARAMETER
TEST CONDITIONS
+/- 0.025dB
+/- 0.035dB
f > 0.546fs
f > 0.546fs
-0.5dB
-0.1dB
-6dB
-3dB
-6dB
0.546fs
0.546fs
MIN
-60
-55
0
0
0.5fs
21/fs
0.5fs
29/fs
10.4
21.6
TYP
3.7
+/- 0.025
+/-0.035
0.454fs
0.454fs
MAX
PTD Rev 2.6 November 2005
UNIT
dB
dB
dB
dB
Hz
WM8978
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