TDA7404D Datasheet, PDF (15/26 Pages) STMicroelectronics – CARRADIO-SIGNAL-PROCESSOR

1.8.2 Center Frequency
Figure 13 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.
Figure 13. Treble Center Frequencies @ Gain = 15dB

TDA7404D







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1.9 External AC - Coupling
TDA7404D has external AC - coupling terminals which can be selected one of two positions behind the Mixing
stage or Bass filter.
Figure 14. External AC - Coupling
Input
ACOUT
SW1
a
b
Mixing
Stage
SW3
SOUND
EFFECTS
Volume & Filter
ACIN
SW2
ab
ACC selector
Speaker
SW4
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