TDA7402_00 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7402_00

CAR RADIO SIGNAL PROCESSOR

STMicroelectronics 

TDA7402

1.8.2 Center Frequency

Figure 12 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.

Figure 12. Treble Center Frequencies @ Gain = 14dB

15.0

12.5

10.0

7.5

5.0

2.5

0.0

10.0

100.0

1.0K

10.0K

1.9 Subwoofer Application

Figure 13. Subwoofer Application with LPF 80/120/160Hz and HPF 90/135/180Hz

0.0

-10.0

-20.0

dB

-30.0

-40.0

-50.0

10.0

100.0

1.0K

Hz

10.0K

Both filters, the lowpass- as well as the highpass-filter, have butterworth characteristic so that their cut-off fre-

quencies are not equal but shifted by the factor 1.125 to get a flat frequency response.

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