TDA7418 STMicroelectronics, TDA7418 Datasheet - Page 14

• Manufacturer Part Number: TDA7418
• Description: IC PROCESSOR CAR AUD 3BAND 20SOI
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of TDA7418

• Applications: Radio
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Description of the audioprocessor
4.3.3
4.3.4
4.4
14/29
Low and high frequency boost
Figure 6
Figure 6.
Flat mode
In flat mode the loudness stage works as a 0dB to -15dB attenuator.
SoftMute
The digitally controlled SoftMute stage allows muting/demuting the signal with a I
programmable slope. The mute process can either be activated by the SoftMute pin or by
the I
regions (see
For timing purposes the Bit0 of the I
until the end of demuting.
Figure 7.
1. Please notice that a started Mute-action is always terminated and could not be interrupted by a change of
the mute-signal
2
C-bus. This slope is realized in a special S-shaped curve to mute slow in the critical
shows the different Loudness shapes in low & high frequency boost.
Loudness attenuation, fc = 2.4kHz
Softmute timing
Figure
7).
+SIGNAL
-SIGNAL
I
2
MUTE
C BUS
EXT.
OUT
REF
1
1
2
C-bus output register is set to 1 from the start of muting
D97AU634
Time
2
C-bus
TDA7418