TDA7418 STMicroelectronics, TDA7418 Datasheet - Page 15

• 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

TDA7418
4.5
4.6
4.6.1
SoftStep volume
When the volume-level is changed audible clicks could appear at the output. The root cause
of those clicks
could either be a DC-Offset before the volume-stage or the sudden change of the envelope
of the audio signal. With the SoftStep-feature both kinds of clicks could be reduced to a
minimum and are no more audible.
Eight programmable softstep time from one step to the next are user selectable.
Figure 8.
1. For steps more than 1dB the SoftStep mode should be deactivated because it could generate 1dB error
Bass
There are four parameters programmable in the bass stage:
Attenuation
Figure 9
Figure 9.
step during the blend-time.
shows the attenuation as a function of frequency at a center frequency of 80Hz.
SoftStep timing
Bass control @ f
-0.5dB
0.5dB
-1dB
1dB
V
OUT
C
= 80Hz, Q = 1
SS Time
Description of the audioprocessor
D00AU1170
Time
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