TDA7411 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7411

ADVANCED CAR SIGNAL PROCESSOR

STMicroelectronics 

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

TDA7411

Speaker Coupling

In some applications additional signal manipulations are desired, for example surround-sound or more-

band-equalizing. For this purpose an AC-Coupling with four different AC-Coupling inputs is placed before

the speaker-attenuators.

The input-impedance of the AC-Inputs is always 50kΩ with exception of AC input ACin1, which has pro-

grammable input impedance. For ACin3 exists an internal mixing stage and an internal mono low pass

filter, which is available as input only for the speaker FreeL/R.

There are two possibilities for internal DC Coupling:

– main channel after the bass filter

– main channel after the middle filter (same as at ACout pin)

The I2C bus programming tables shows the possible speaker sources.

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