TDA7419 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7419' PDF : 40 Pages View PDF
TDA7419
Description of the audio processor
4.12
HPF applications
For HPF applications, HPF filter is available for additional processing after the speaker
control. It is a 2nd order butterworth highpass filter with selectable flat mode. Figure 22
shows the diagram of the HPF that includes an external RC network.
Figure 22. HPF diagram
External RC network
ACOUT
/AC2OUT
SE3IN
/AC2IN
ACIN
/FILO
Gain Control
From speaker
To
output
4.13
Output selector and mixing
The output-selector allows the front and rear speakers to connect to different sources. The
setup of the output selector is shown in Figure 24. A Mixing-stage is placed after the front
speaker-attenuator and can be set to mixing-mode. Having a full volume-attenuator for the
mix-signal, the stage offers a wide flexibility to adapt the mixing levels.
Figure 23. Output selector
Mix_in
Attenuator
Main
Second
BassL+BassR
Attenuator
Attenuator
Subwoofer
filter
Attenuator
Front
Rear
Subwoofer
output
27/40
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