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参数资料
| 型号： | TDA7411 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44 |
| 封装： | 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44 |
| 文件页数： | 18/43页 |
| 文件大小： | 617K |
| 代理商： | TDA7411 |
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Obsolete
Product(s)
- Obsolete
Product(s)
25/43
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 D7 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 38s (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
τDeemp
FIELDSTRENGHT
VHCH
VHCL
3
τDeemp
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相关代理商/技术参数 |
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| TDA7411TR | 功能描述:IC PROCESSOR CAR SIGNAL 44TQFP RoHS:否 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP（10x10） 包装:Digi-Reel® 其它名称:497-11050-6 |
| TDA7412 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CARRADIO SIGNAL PROCESSOR |
| TDA7415 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| TDA7415CB | 功能描述:音频放大器 Car-radio Multimedia Signal (CMSP) 6-chnl RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7415CBTR | 功能描述:音频放大器 Car-radio Multimedia Signal (CMSP) 6-chnl RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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