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參數(shù)資料
| 型號(hào)： | TDA7374B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Dual Bridge Audio Amplifier for Car Radio(用于車載電臺(tái)的雙通道橋式音頻放大器) |
| 中文描述： | 雙橋音頻放大器汽車收音機(jī)（用于車載電臺(tái)的雙通道橋式音頻放大器） |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 170K |
| 代理商： | TDA7374B |
CLIPPINGDETECTOR
Fig 19 shows an applicationusing the TDA7374B
in combination with the SGS-THOMSON audio-
processorTDA7302.
The output clipping is recognizedby the microproc-
essor(in this applicationit is simulatedby a PC).
The detailed way to operate of the system is rep-
resented by the flow-chartof fig.18.
The controller detects when the clipping is active
(minimun detection width fixed by a C29 = 12 nF
external capacitor), and reduces the volume (or
bass ) bystep of 2 dB (with a programmable wait-
ing time), until no more clipping is detected.
Then the controllerwaits for a programmabletime
before increasing the volume again by step of 2
dB until clippingis again detectedor the panelse-
lectedvolume is reached.
Practical advantagesof this application is a better
sound quality deriving from operation under no
clipping conditions, which also means the avail-
ability of higherundistortedpower.
WHAT IS NEEDED FOR A DEMONSTRATION
- a XT or AT IBM compatible PC, supplied with
EGA card
- aSGS-THOMSONaudioprocessorapplicationdisk
- a TDA7302 + TDA7374Bboard
- a connector from audioprocessor board to PC
parallelport
GENERAL INFORMATION
In the application shown in fig 18 the TDA7302
audioprocessor works on PC XT or AT IBM com-
patible.
Control is accomplished by serial bus ( S-bus or
I
2
C-bus or SPI bus) sent to the test board through
the PC parallel port.
The PC simulatesthe behaviourof the microproc-
essor in a real application (for example in a car
radio) and the buffer is necessary only in this ap-
plicationfor protectingthe PC.
Figure:18:
Clipping DetectorControl Routine
TDA7374B
10/13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7374 | DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO |
| TDA7374BV | DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO |
| TDA7375AH | 2 x 37W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO |
| TDA7375AV | 2 x 37W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO |
| TDA7375H | 2 x 35W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7374BV | 功能描述:音頻放大器 Quad Power 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 |
| TDA7374V | 制造商:STMicroelectronics 功能描述:DUAL 21W BRIDGE AMP - Rail/Tube |
| TDA7375 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 x 35W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO |
| TDA7375A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 x 37W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO |
| TDA7375A_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 X 37W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO |
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