參數(shù)資料
型號： TDA7461ND
廠商： STMICROELECTRONICS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： SOP-28
文件頁數(shù)： 9/48頁
文件大?。?/td> 437K
代理商： TDA7461ND
TDA7461
Description of the audio processor part
Figure 7.
Loudness attenuation = 15 dB @ fc = 400 Hz
3.3.2
Softmute
The digitally controlled softmute stage allows muting/demuting the signal with a I2C bus
programmable slope. The mute process can either be activated by the softmute 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.
Softmute timing
1.
Please notice that a started Mute action is always terminated and could not be interrupted by a change of
the mute signal.
3.3.3
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).
10
100
1,000
Hz
-20
-15
-10
-5
(dB)
D98AU844
1
EXT.
MUTE
+SIGNAL
REF
-SIGNAL
1
I
2C BUS
OUT
Time
D97AU634
相關PDF資料
PDF描述
TDA7461NDTR SPECIALTY CONSUMER CIRCUIT, PDSO28
TDA7461N SPECIALTY CONSUMER CIRCUIT, PDIP28
TDA7462D SPECIALTY CONSUMER CIRCUIT, PDSO28
TDA7463AD 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20
TDA7463A 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20
相關代理商/技術參數(shù)
參數(shù)描述
TDA7461NDTR 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: 安裝風格: 封裝 / 箱體: 封裝:Tube
TDA7462 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL AUDIOPROCESSOR WITH COMPANDER AND SUBWOOFER OUTPUT
TDA7462D 功能描述:音頻 DSP Dual Audioprocessor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube
TDA7462D013TR 功能描述:音頻 DSP DUAL AUDIOPROCESSOR COMPANDER /SUBWOOFER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube
TDA7463A 功能描述:多媒體雜項 Lo Vltg TONE CONTROL RoHS:否 制造商:Texas Instruments 類型: 通道數(shù)量: 轉換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube
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