TDA7402 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TDA7402

Car Radio Signal Processor

STMicroelectronics 

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TDA7402

Audioprocessor part

3.12

AC coupling

In some applications additional signal manipulations are desired, for example surround

sound or more band equalizing. For this purpose an AC coupling is placed before the

speaker attenuator, which can be activated or internally shorted by the I2C bus. In short

condition the input signal of the speaker attenuator is available at the AC outputs. The input

impedance of this AC Inputs is 50kΩ.

3.13 Output selector

The output-selector allows to connect the main- or the second-source to the front, rear and

subwoofer speaker attenuator, respectively. As an example of this programming the device

is able to connect via software the main source to the back (rear) and the second source to

) the front (see Figure 17). In addition to this stage allows to setup different applications by

t(s I2C bus programming. Three examples are given in Figure 18, 19, and 20.

uc Figure 19. Output selector

rod ACOUT ACINF ACINR SWIN

lete P MAIN SOURCE

so LEFT CHANNEL

VOICE BAND

BANDPASS

) - Ob 25K

t(s MAIN SOURCE 25K

c RIGHT CHANNEL

du SECOND SOURCE

ro 25K

P 25K

te LEFT CHANNEL

Obsole SECOND SOURCE

MS MONO

50K 50K 50K

LOWPASS

SEC.S MONO

OFF/ON FC

SPEAKER FRONT

SPEAKER REAR

SPEAKER SUBWOOFER

D00AU1155

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