TDA7419 Datasheet, PDF (13/30 Pages) STMicroelectronics – 3 BAND CAR AUDIO PROCESSOR

5.6.3 Quality Factors
Figure 12 shows the four possible quality factors 1, 1.25, 1.5 and 2.
Figure 12. Bass Quality factors @ Gain = 14dB, f_C = 80Hz
TDA7419
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
5.6.4 DC Mode
It is used for cut only for shelving filter. In this mode the DC-gain is increased by 4.4dB. Inaddition the pro-
grammed center frequency and quality factor is decreased by 25% which can be used to reach alternative cen-
ter frequencies or quality factors.
Figure 13. Bass normal and DC Mode @ Gain = 14dB, f_C = 80Hz
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
Note: The center frequency, Q and DC-mode can be set fully independently.
13/30