TDA7412 Просмотр технического описания (PDF) - STMicroelectronics

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TDA7412

CARRADIO SIGNAL PROCESSOR

STMicroelectronics 

TDA7412

1.7.4 DC Mode

In this mode the DC-gain is increased by 4.4dB. In addition the programmed center frequency and quality factor

is decreased by 25% which can be used to reach alternative center frequencies or quality factors.

Figure 10. Bass normal and DC Mode @ Gain = 14dB, fC = 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.

1.8 Treble

There are two parameters programmable in the treble stage:

1.8.1 Attenuation

Figure 11 shows the attenuation as a function of frequency at a center frequency of 17.5kHz.

Figure 11. Treble Control @ fC = 17.5kHz

15.0

10.0

5.0

0.0

-5.0

-10.0

-15.0

10.0

100.0

1.0K

10.0K

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