參數(shù)資料
型號(hào)： TDA7381
廠商： 意法半導(dǎo)體
英文描述： 4 x 25W Quad Bridge Car Radio Amplifier(音頻功率放大器)
中文描述： 4 × 25瓦四橋汽車收音機(jī)放大器（音頻功率放大器）
文件頁(yè)數(shù)： 7/10頁(yè)
文件大小： 292K
代理商： TDA7381
OUTPUT MISCONNECTIONS (OUT-GND &
OUT-Vs shorts)
Diagnostics information is available across an
open collector output located at pin 25 (fig. 4)
through a current sinking whenever at least one
of the aboveevents is recognized.
Among them, the
CLIPPING DETECTOR
acts in
a way to output a signal as soon as one or more
power transistorsstart being saturated.
As a result, the clipping-related signal at pin 25
takes the form of pulses, which are perfectly syn-
cronized with each single clipping event in the
music programand reflect the same duration time
(fig. 5).
Applications making use of this facility
usually operate a filtering/integrationof the pulses
train through passive R-C networks and realize a
volume (or tone bass) stepping down in associa-
tion with microprocessor-driven audioprocessors.
The maximum load that pin 25 can sustain is
1K
.
Due to its operating principles, the clipping detec-
VREF
R
Vpin 25
25
D95AU303
TDA7381
Figure 4:
Diagnosticscircuit.
Figure5:
Clipping Detection Waveforms.
t
t
t
MUTE PIN
VOLTAGE
Vs
OUTPUT
WAVEFORM
Vpin 25
WAVEFORM
SHORT TO GND
OR TO Vs
D95AU304
CLIPPING
THERMAL
PROXIMITY
ST-BY PIN
VOLTAGE
t
Figure 6:
DiagnosticsWaveforms.
TDA7381
7/10
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7381_08 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 x 25W quad bridge car radio amplifier
TDA7382 功能描述:音頻放大器 4X22W Quad Brdg Amp 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
TDA7382音頻功率放大器 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
TDA7383 功能描述:音頻放大器 4X30W Quad Brdg Amp 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
TDA7384 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 x 35W QUAD BRIDGE CAR RADIO AMPLIFIER
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