WM8973LGEFL/V Wolfson Microelectronics, WM8973LGEFL/V Datasheet - Page 57
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WM8973LGEFL/V
Manufacturer Part Number
WM8973LGEFL/V
Description
Audio CODECs Stereo Codec with H/P Spkr
Manufacturer
Wolfson Microelectronics
Datasheets
1.WM8973LGEFLV.pdf
(57 pages)
2.WM8973LGEFLV.pdf
(63 pages)
3.WM8973LGEFLV.pdf
(61 pages)
4.WM8973LGEFLV.pdf
(57 pages)
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
Production Data
Figure 46 De-emphasis Frequency Response (44.1kHz)
Figure 48 De-emphasis Frequency Response (48kHz)
w
HIGHPASS FILTER
The WM8973L has a selectable digital highpass filter in the ADC filter path to remove DC offsets. The filter response is
characterised by the following polynomial:
Figure 50 ADC Highpass Filter Response
-10
-10
-2
-4
-6
-8
-2
-4
-6
-8
-10
-15
0
0
-5
0
0
0
0
5000
5000
0.0005
Frequency (Fs)
Frequency (Fs)
Frequency (Fs)
10000
10000
0.001
H(z) =
0.0015
15000
15000
1 - 0.9995z
1 - z
0.002
20000
20000
-1
Figure 47 De-emphasis Error (44.1kHz)
Figure 49 De-emphasis Error (48kHz)
-1
-0.1
-0.2
-0.3
-0.4
-0.1
-0.2
-0.3
-0.4
0.4
0.3
0.2
0.1
0.4
0.3
0.2
0.1
0
0
0
0
5000
5000
Frequency (Fs)
Frequency (Fs)
10000
10000
PD, Rev 4.5, December 2011
15000
15000
WM8973L
20000
20000
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