TDA7404DTR Datasheet, PDF (18/35 Pages) STMicroelectronics – Car radio signal processor

Description of functionality
TDA7404
4.7.2
Center frequency
Figure 11 shows the four possible center frequencies 60, 80,100 and 200 Hz.
Figure 11. Bass center frequencies @ gain = 15 dB, Q = 1
16
12
8
4
0
4.7.3
-4
10
100
1K
10K
Quality factors
Figure 12 shows the four possible quality factors 1, 1.25, 1.5 and 2.
Figure 12. Bass quality factors @ gain = 14 dB, f_C = 80 Hz
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
18/35