TDA7406TR STMicroelectronics, TDA7406TR Datasheet - Page 21

• Manufacturer Part Number: TDA7406TR
• Description: IC PROCESSOR CAR SIGNAL 44-TQFP
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of TDA7406TR

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7406
Note:
4.6
4.6.1
Figure 8.
For steps more than 0.5dB (Volume) or 1dB (Speaker) the SoftStep mode should be
deactivated because it could generate a hard 1dB step during blending.
The Seven Band Equalizer
Equalizer Filter
Each filter is realized as a switched capacitor with a 2nd order frequency response.
There are three parameters programmable in the equalizer filter:
●
●
●
The center frequency, Q, DC-mode and boost/cut can be set fully independently for each
filter.
factors.
Attenuation: ±15dB in 1db step resolution
as a function of frequency at a center frequency of 1kHz.)
Center Frequency: This parameter is programmable in the filter stages 1(62/100Hz),
6(4/6.34kHz) and 7(15/16kHz). The others bands are fixed at: 157, 396, 1K and 2.5K
Hertz (see
Quality Factors: The four possible quality factors are 1, 1.4, 1.8 and 2.2 (see
Figure
Figure 12
11).
SoftStep-Timing for Volume
-0.5dB
0.5dB
-1dB
shows the superposition of all equalizer filter curves for different quality
1dB
Figure
10).
SS Time
(Figure 9
Description of the audioprocessor part
shows the boost and cut response
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