參數(shù)資料
型號: TDA7416
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 1 CHANNEL(S), EQUALIZER CIRCUIT, PQFP44
封裝: 10 X 10 MM HEIGHT, TQFP-44
文件頁數(shù): 3/27頁
文件大小: 564K
代理商: TDA7416
11/27
TDA7416
1.4 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. This slope is real-
ized in a special S-shaped curve to mute slow in the critical regions (see Figure 5).
For timing purposes the Bit0 of the I2C-bus output register is set to 1 from the start of muting until the end
of de-muting.
Figure 5. Soft Mute-Timing
Note: Please notice that a started Mute-action is always terminated and could not be interrupted by a change of the mute -signal.
1.5 SoftStep Volume and Speaker
When the speaker-level is changed audible clicks could appear at the output. The root cause of those
clicks could either be a DC-Offset before the speaker-stage or the sudden change of the envelope of the
audio signal. 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.
Figure 6. SoftStep-Timing for Volume
Note: For steps more than 0.5dB (Volume) or 1dB (Speaker) the SoftStep mode should be deactivated because it could generate a hard 1dB
step during blending.
1dB
0.5dB
-0.5dB
-1dB
SS Time
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TDA7416_11 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Car radio signal processor
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TDA7418 功能描述:音頻放大器 Car-radio Multimedia Signal (CMSP) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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