E-TDA7406 STMicroelectronics, E-TDA7406 Datasheet - Page 23

• Manufacturer Part Number: E-TDA7406
• Description: Audio DSPs CAR RADIO SIGNAL
• Manufacturer: STMicroelectronics

Specifications of E-TDA7406

• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-44
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7406
4.6.2
Note:
4.7
Figure 12. Superposition of all EQ bands @ boost = 15dB
DC-Mode
The filter stage 1 (62/100Hz) has a programmable +4dB DC-gain when the boost is set at
+15dB (See
Figure 13. EQ band1, normal- and DC-mode @ boost = 15 dB, f
The center frequency, Q, DC-mode and boost/cut can be set fully independently for each
filter.
Subwoofer Application
There is one separate subwoofer output. A low-pass filter stage at this output allows the
selection of three different frequencies: 80/120/160Hz. A high Pass Filter stage is present in
the main path with selectable 90/135/180/215Hz frequencies. Both filters, the low-pass as
well as the high-pass filter can be disabled and have butterworth characteristics so that their
dB
18
16
14
12
10
8
6
4
2
0
16
dB
14
12
10
8
6
4
2
0
-1
1
10
Figure
13).
10
100
100
Description of the audioprocessor part
1k
1K
Center
= 62 Hz
Hz
Hz
10K
20k
23/64