13/25

TDA7409

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.

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

0.0

2.5

5.0

7.5

10.0

12.5

15.0

10.0

100.0

1.0K

10.0K























-

-