WM8960_06 Datasheet, PDF (83/88 Pages) Wolfson Microelectronics plc – Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications

Preliminary Technical Data
DE-EMPHASIS FILTER RESPONSES
WM8960
0
-1 ⁰
-2
-3
-4
-5
-6
-7
-8
-9
-10
MAGNITUDE(dB)
5000
10000
15000
20000
0.3
0.25
0.2
0.15
0.1
0.05
0
0
-0.05
-0.1
-0.15
MAGNITUDE(dB)
2000 4000 6000 8000 10000 12000 14000 16000 18000
Frequency (Hz)
Frequency (Hz)
Figure 44 De-Emhpasis Digital Filter Response (32kHz)
Figure 45 De-Emphasis Error (32kHz)
0
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
5000
MAGNITUDE(dB)
10000
15000
Frequency (Hz)
20000
25000
0.2
0.15
0.1
0.05
0
0
-0.05
-0.1
MAGNITUDE(dB)
5000
10000
15000
20000
Frequency (Hz)
Figure 46 De-Emhpasis Digital Filter Response (44.1kHz)
Figure 47 De-Emphasis Error (44.1kHz)
25000
0
0
-2
-4
-6
-8
-10
-12
5000
MAGNITUDE(dB)
10000
15000
20000
25000
30000
Frequency (Hz)
0.15
0.1
0.05
0
0
-0.05
-0.1
-0.15
MAGNITUDE(dB)
5000
10000
15000
20000
Frequency (Hz)
Figure 48 De-Emhpasis Digital Filter Response (48kHz)
Figure 49 De-Emphasis Error (48kHz)
25000
30000
w
PTD, September 2006, Rev 2.0
83