TDA7404 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7404' PDF : 35 Pages View PDF
TDA7404
Description of functionality
4.4
4.4.1
Loudness
There are four parameters programmable in the loudness stage:
Attenuation
Figure 5 shows the attenuation as a function of frequency at fC = 400 Hz.
Figure 5. Loudness attenuation @ fC = 400 Hz
5
0
-5
-10
-15
4.4.2
-20
10
100
1K
10K
Center frequency
Figure 6 shows the three possible peak-frequencies 400 Hz, 800 Hz and 2.4 kHz.
Figure 6. Loudness center frequencies @ Attn. = 15 dB
5
0
-5
-10
-15
-20
10
100
1K
10K
15/35
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