WM8973LGEFL/V Wolfson Microelectronics, WM8973LGEFL/V Datasheet - Page 48

• Manufacturer Part Number: WM8973LGEFL/V
• Description: Audio CODECs Stereo Codec with H/P Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8973LGEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8973L
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DIGITAL FILTER CHARACTERISTICS
Table 44 Digital Filter Characteristics
TERMINOLOGY
1.
2.
Passband
Passband Ripple
Stopband
Stopband Attenuation
Passband
Passband Ripple
Stopband
Stopband Attenuation
High Pass Filter Corner
Frequency
Passband
Passband Ripple
Stopband
Stopband Attenuation
Passband
Passband Ripple
Stopband
Stopband Attenuation
ADC Filter Type 0 (USB Mode, 250fs operation)
ADC Filter Type 1 (USB mode, 272fs or Normal mode operation)
DAC Filter Type 0 (USB mode, 250fs operation)
DAC Filter Type 1 (USB mode, 272fs or Normal mode operation)
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
The ADC and DAC employ different digital filters. There are 4 types of digital filter, called Type 0, 1, 2
and 3. The performance of Types 0 and 1 is listed in the table below, the responses of all filters is
shown in the proceeding pages.
TEST CONDITIONS
f > 0.5465fs
f > 0.5465fs
f > 0.584fs
f > 0.584fs
+/- 0.05dB
+/- 0.05dB
+/- 0.03dB
+/- 0.03dB
-0.5dB
-0.1dB
-6dB
-6dB
-3dB
-6dB
-6dB
0.5465fs
0.5465fs
0.584fs
0.584fs
MIN
-60
-60
-50
-50
0
0
0
0
0.5fs
0.5fs
0.5fs
0.5fs
10.4
21.6
TYP
3.7
0.4535fs
0.4535fs
+/- 0.05
+/- 0.05
+/- 0.03
0.416fs
0.416fs
+/-0.03
MAX
Advanced Information
AI Rev 3.2 July 2004
UNIT
dB
dB
dB
dB
dB
dB
dB
Hz
dB
48