參數(shù)資料
型號(hào)： TDA7419TR
廠商： 意法半導(dǎo)體
英文描述： 3 BAND CAR AUDIO PROCESSOR
中文描述： 3波段車(chē)載音頻處理器
文件頁(yè)數(shù)： 11/30頁(yè)
文件大小： 804K
代理商： TDA7419TR
11/30
TDA7419
5.3.4 Flat Mode
In flat mode the loudness stage works as a 0dB to -15dB attenuator.
5.4
The digitally controlled SoftMute stage allows muting/demuting the signal with a I
2
C-bus programmable
slope. The mute process can either be activated by the SoftMute pin or by the I
2
C-bus. This slope is real-
ized in a special S-shaped curve to mute slow in the critical regions (see Figure 8).
For timing purposes the Bit0 of the I2C-bus output register is set to 1 from the start of muting until the end
of demuting.
SoftMute
Figure 8. Sofmute Timing
Note: Please notice that a started Mute-action is always terminated and could not be interrupted by a change of the mute -signal
5.5
When the volume-level is changed audible clicks could appear at the output. The root cause of those clicks
could either be a DC-Offset before the volume-stage or the sudden change of the envelope of the audi-
osignal. With the SoftStep feature both kinds of clicks could be reduced to a minimum and are no more
audible. The blend-time from one step to the next is programmable in four steps.
SoftStep-Volume
Figure 9. SoftStep Timing
Note: For steps more than 0.5dB the SoftStep mode should be deactivated because it could generate a hard 1dB step during the blend-time.
1
EXT.
MUTE
+SIGNAL
REF
-SIGNAL
1
I
2
C BUS
OUT
Time
D97AU634
1dB
0.5dB
-0.5dB
-1dB
Time
D00AU1170
V
OUT
SS Time
相關(guān)PDF資料
PDF描述
TDA7420 MULTIFUNCTIONAUDIO PROCESSOR
TDA7421N AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS
TDA7421 AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS
TDA7427A AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER
TDA7427AAD AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7420 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MULTIFUNCTIONAUDIO PROCESSOR
TDA7421 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS
TDA7421N 制造商:ST 功能描述:AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS
TDA7427 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER
TDA7427A 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*