TDA7416 Datasheet, PDF (12/27 Pages) STMicroelectronics – CARRADIO SIGNAL PROCESSOR

TDA7416
1.6 Equalizer filter
There are three parameters programmable in the equalizer filter:
1.6.1 Attenuation
Figure 7 shows the boost and cut response as a function of frequency at a center frequency of 1kHz.
Figure 7. Equalizer filter control @ f_Center = 1kHz, Q = 1.0
15
dB
10
5
0
-5
-10
-15
20
100
1k
10k 20k
Hz
1.6.2 Center Frequency
This parameter is programmable in the filter stage 1(62/100Hz), 6(4/6.34kHz) and 7(15/16kHz) only.
Figure 8 shows the center frequencies 62, 156, 396, 1000, 2510, 6340 and 15000Hz of the 7 equalizer
filters.
Figure 8. Center frequencies @ Gain = 15dB, Q = 1.0
16
dB
14
12
10
8
6
4
2
0
-2
10
100
1k
Hz 20k
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