參數(shù)資料
型號(hào)： TDA7402
廠商： STMICROELECTRONICS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝： 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44
文件頁數(shù)： 20/69頁
文件大小： 865K
代理商： TDA7402
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 50k
Ω.
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
I2C bus programming. Three examples are given in Figure 18, 19, and 20.
Figure 19.
Output selector
VOICE BAND
BANDPASS
LOWPASS
MS MONO
MAIN SOURCE
RIGHT CHANNEL
MAIN SOURCE
SPEAKER FRONT
SWIN
ACINR
ACINF
OFF/ON
FC
ACOUT
SPEAKER REAR
SPEAKER SUBWOOFER
D00AU1155
LEFT CHANNEL
SECOND SOURCE
25K
50K
25K
SEC.S MONO
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