Datasheet

Description of the audio processor TDA7419
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Figure 20. Timing of the spectrum analyzer
4.11 AC coupling
In some applications additional signal manipulations are desired, such as additional band
equalizations. For this purpose, an AC coupling can be placed before the loudness
attenuator or speaker-attenuators, which can be activated or internally shorted by I
2
C bus.
In short condition, the input-signal of the speaker-attenuator is available at the AC outputs.
The input-impedance of this AC inputs is 50 k.
Figure 21. Diagram of AC coupling
To Output
ACINL
ACINR
ACOUTRACOUTL
From Input MUX
Filters
InGain
Speakers