參數(shù)資料
型號(hào)： TDA7718NTR
廠商： STMICROELECTRONICS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： ROHS COMPLIANT, MO-153AC, TSSOP-28
文件頁(yè)數(shù)： 9/40頁(yè)
文件大小： 543K
代理商： TDA7718NTR
TDA7718N
Description of the audioprocessor
Doc ID 16502 Rev 1
4.3
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 realized in a special S-shaped curve to mute slow in the critical
regions (see Figure 7).
For timing purposes the bit 0 of the I2C bus output register is set to 1 from the start of muting
until the end of demuting.
Figure 7.
SoftMute timing
Note:
Please notice that a started mute-action is always terminated and could not be interrupted
by a change of the mute –signal.
4.4
SoftStep volume
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 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 as 5 ms or 10 ms. The SoftStep control is described in detail in Chapter 4.9.
1
EXT.
MUTE
+SIGNAL
REF
-SIGNAL
1
I
2C BUS
OUT
Time
D97AU634
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7718TR 功能描述:音頻放大器 3 Band Car Audio Processor 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7719 功能描述:音頻放大器 3 Band Car Audio Processor 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7719TR 功能描述:音頻放大器 3 Band Car Audio Processor 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TDA7730B 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP RDS DEMODULATOR + FILTER
TDA7801 功能描述:音頻放大器 Digital Input Quad Bridge Pwr Amplifier 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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