TDA7402_07 STMICROELECTRONICS [STMicroelectronics], TDA7402_07 Datasheet - Page 29

• Manufacturer Part Number: TDA7402_07
• Description: Car radio signal processor
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

TDA7402
4.13
Subwoofer
Several different applications are possible with the subwoofer circuit:
1.
2.
In all applications the phase of the output-signal can be configured to be 0° or 180° . In the
center speaker mode only at the filtered output the phase is changed.
Figure 20. Application 1 using internal highpass and mono low pass filter
SECOND SOURCE
SECOND SOURCE
RIGHT CHANNEL
LEFT CHANNEL
LEFT CHANNEL
MAIN SOURCE
MAIN SOURCE
Subwoofer filter OFF
a)
b)
c)
d)
Subwoofer filter ON
a)
b)
c)
Main source stereo (AC coupled)
Second source stereo (DC coupled)
Main source mono differential (DC coupled)
Second source mono-differential (DC coupled)
Main source mono differential (DC coupled)
Second source mono differential (DC coupled)
Center speaker mode (filtered mono signal at SWL, unfiltered mono signal at
SWR)
PROGRAMMING
10/xxxx10xx
12/1010xxxx
5/1xxxxxxx
7/xxxxx1xx
BASS-FILTER
25K
25K
25K
25K
SEC.S MONO
VOICE BAND
BANDPASS
MS MONO
ACINF
ACOUT
220nF
50K
OFF/ON FC
LOWPASS
220nF
ACINR
50K
50K
SWIN
Audioprocessor part
SPEAKER FRONT
SPEAKER REAR
SPEAKER SUBWOOFER
D00AU1156
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