TDA7412 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7412

CARRADIO SIGNAL PROCESSOR

STMicroelectronics 

TDA7412

1.12 Subwoofer

Several different applications are possible with the Subwoofer-circuit:

1. Subwoofer-Filter OFF

a. Main-source stereo (AC-coupled)

b. Second-source stereo (DC-coupled)

c. Main-source mono-differential (DC-coupled)

d. Second-source mono-differential (DC-coupled)

2. Subwoofer-Filter ON

a. Main-source mono-differential (DC-coupled)

b. Second-source mono-differential (DC-coupled)

c. Center-Speaker-Mode (filtered mono signal at SWL, unfiltered mono signal at SWR)

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 16. Application1 using internal Highpass- and mono Low-pass-Filter

PROGRAMMING

5/1xxxxxxx

7/xxxxx1xx

10/xxxx10xx

12/1010xxxx

220nF 220nF

ACINF ACOUT ACINR

SWIN

MAIN SOURCE

LEFT CHANNEL

BASS-FILTER

VOICE BAND

BANDPASS

MAIN SOURCE

RIGHT CHANNEL

SECOND SOURCE

LEFT CHANNEL

SECOND SOURCE

25K

MS MONO

50K

50K 50K

25K

LOWPASS

25K

SEC.S MONO

25K

OFF/ON FC

SPEAKER FRONT

SPEAKER REAR

SPEAKER SUBWOOFER

D00AU1156

20/56

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