參數(shù)資料
型號(hào)： TDA7460NDTR
廠商： STMICROELECTRONICS
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO20
封裝： ROHS COMPLIANT, SOP-20
文件頁(yè)數(shù)： 10/49頁(yè)
文件大?。?/td> 473K
代理商： TDA7460NDTR
Description of the audio processor part
TDA7460ND
4.2.2
Soft mute
The digitally controlled soft mute stage allows muting/demuting the signal with a I2C bus
programmable slope. The mute process can either be activated by the soft mute pin or by
the I2C bus. The slope is realized in a special S shaped curve to mute slow in the critical
regions (see Figure 8.).
For timing purposes the Bit 3 of the I2C bus output register is set to 1 from the start of
muting until the end of demuting.
Figure 8.
Soft mute timing
1.
Please notice that a started Mute action is always terminated and could not be interrupted by a change of
the mute signal.
4.2.3
Soft step volume
When volume level is changed often an audible click appears at the output. The root cause
of those clicks could be either a DC offset before the volume stage or the sudden change of
the envelope of the audio signal. With the Soft step feature both kinds of clicks could be
reduced to a minimum and are no more audible (see Figure 9.).
Figure 9.
Soft step timing
2.
For steps more than 1 dB the soft step mode should be deactivated because it could generate a 1 dB error
during the blend-time
1
EXT.
MUTE
+SIGNAL
REF
-SIGNAL
1
I
2C BUS
OUT
Time
D97AU634
2dB
1dB
-1dB
-2dB
Time
D97AU635
VOUT
10ms
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7461 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR
TDA7461D 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR
TDA7461N 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR
TDA7461N_03 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:CAR RADIO SIGNAL PROCESSOR
TDA7461ND 功能描述:音頻 DSP Car Radio Signal RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
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