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參數(shù)資料
| 型號： | TDA7411 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | ADVANCED CAR SIGNAL PROCESSOR |
| 中文描述： | 先進的汽車信號處理器 |
| 文件頁數(shù)： | 25/43頁 |
| 文件大小： | 581K |
| 代理商： | TDA7411 |
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TDA7411
The gain can be programmed through 4 bits in the "Stereo Decoder Adjustment"-byte. The MONO-voltage
VMO (0dB channel separation) can be chosen selecting VSBL.
All necessary internal reference voltages like REF5V are derived from a bandgap circuit. Therefore they
have a temperature coefficient near zero. This is useful if the fieldstrength signal is also temperature com-
pensated. But most of the IF-devices are applying a LEVEL-voltage with a TC of 3300ppm. The A673 of-
fers this TC for the reference voltages, too. The TC is selectable with bit D
7
of the "stereo decoder
adjustment"-byte.
Figure 20. Relation Between Internal and External LEVEL Voltages and Setup of Stereoblend
Highcut Control
The highcut control set-up is similar to the stereoblend control set-up: the starting point VHCH can be set
with 2 bits to be 42, 50, 58 or 66% of REF5V whereas the range can be set to be 17, 22, 28 or 33% of
VHCH (see fig. 21).
Figure 21. High cut characteristics
Functional Description of the Noise Blanker
In the automotive environment spikes produced by the ignition and for example the wiper-motor disturb
the MPX-signal. The aim of the noise blanker part is to cancel the audible influence of the spikes. There-
fore the output of the stereo decoder is held at the actual voltage for a time between 22 and 38μs (pro-
grammable). The block diagram of the noise blanker is given in fig.22
INTERNAL
VOLTAGES
t
modAU639
VSBL
REF 5V
SETUP OF VST
INTERNAL
VOLTAGES
t
29%
REF 5V
SETUP OF VMO
LEVEL
LEVEL INTERN
FIELDSTRENGHT VOLTAGE
VST
VMO
LEVEL INTERN
58%
VSBL
VST
VMO
FIELDSTRENGHT VOLTAGE
LOWPASS
TIME CONSTANT
D97AU640
τ
Deemp
FIELDSTRENGHT
VHCH
VHCL
3
τ
Deemp
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7412 | CARRADIO SIGNAL PROCESSOR |
| TDA7415CB | Car radio multimedia signal processor |
| TDA7416 | CARRADIO SIGNAL PROCESSOR |
| TDA7417 | Car radio audio processor |
| TDA7417TR | Car radio audio processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7411TR | 功能描述:IC PROCESSOR CAR SIGNAL 44TQFP RoHS:否 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標準包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| TDA7412 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CARRADIO SIGNAL PROCESSOR |
| TDA7415 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| TDA7415CB | 功能描述:音頻放大器 Car-radio Multimedia Signal (CMSP) 6-chnl 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 |
| TDA7415CBTR | 功能描述:音頻放大器 Car-radio Multimedia Signal (CMSP) 6-chnl 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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