WM8974GEFL/V Wolfson Microelectronics, WM8974GEFL/V Datasheet - Page 77

• Manufacturer Part Number: WM8974GEFL/V
• Description: Audio CODECs Mono Codec with Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8974GEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-24
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
Notes:
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DIGITAL FILTER CHARACTERISTICS
Table 63 Digital Filter Characteristics
TERMINOLOGY
1.
2.
3.
Table 64 Total Group Delay
1.
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
High Pass Filter Corner
Frequency
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
Total Delay (ADC analogue
input to digital audio interface
output)
Total Delay (Audio interface
input to DAC analogue
output)
ADC Filter
DAC Filter
ADC Path Group Delay
DAC Path Group Delay
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
Note that this delay applies only to the filters and does not include additional delays through other digital circuits. See
Table 64 for the total delay.
Wind noise filter is disabled.
PARAMETER
PARAMETER
TEST CONDITIONS
TEST CONDITIONS
EQ disabled
EQ disabled
EQ enabled
EQ enabled
+/- 0.025dB
+/- 0.035dB
f > 0.546fs
f > 0.546fs
-0.5dB
-0.1dB
-6dB
-3dB
-6dB
0.546fs
0.546fs
26/fs
27/fs
34/fs
35/fs
-60
-80
MIN
MIN
0
0
0.5fs
21/fs
0.5fs
29/fs
28/fs
29/fs
36/fs
37/fs
10.4
21.6
3.7
TYP
TYP
+/- 0.025
+/-0.035
0.454fs
0.454fs
30/fs
31/fs
38/fs
39/fs
MAX
MAX
PD, Rev 4.5, September 2008
UNIT
UNIT
dB
dB
dB
Hz
dB
WM8974
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