wm8782a Wolfson Microelectronics plc, wm8782a Datasheet - Page 16

• Manufacturer Part Number: wm8782a
• Description: 24-bit, 192khz Stereo Adc
• Manufacturer: Wolfson Microelectronics plc

WM8782A
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DIGITAL FILTER CHARACTERISTICS
Table 7 Digital Filter Characteristics
ADC FILTER RESPONSES
Figure 10 Digital Filter Frequency Response
ADC Sample Rate (Single Rate – 48Hz typically)
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
ADC Sample Rate (Dual Rate – 96kHz typically)
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
-20
-40
-60
-80
0
PARAMETER
0
0.5
1
Frequency (Fs)
The WM8782A digital filter characteristics scale with sample rate.
1.5
TEST CONDITIONS
2
f > 0.5465fs
f > 0.5465fs
+/- 0.01dB
+/- 0.01dB
-6dB
-6dB
2.5
3
Figure 11 ADC Digital Filter Ripple
-0.005
-0.015
0.015
0.005
-0.01
-0.02
0.02
0.01
0.5465fs
0.5465fs
0
MIN
-65
-65
0
0
0
0.05
0.1
0.4892fs
0.4892fs
TYP
0.15
22
22
0.2
Frequency (Fs)
0.25
0.4535fs
0.4535fs
+/- 0.01
+/- 0.01
MAX
0.3
0.35
PD, April 2010, Rev 4.8
0.4
UNIT
dB
dB
dB
dB
fs
fs
0.45
Production Data
0.5
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