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参数资料
| 型号： | TDA7381 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 18 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | FLEXIWATT-25 |
| 文件页数： | 2/13页 |
| 文件大小： | 225K |
| 代理商： | TDA7381 |
Application hints
TDA7381
10/13
3.5
Stability and layout considerations
If properly layouted and hooked to standard carradio speakers, the TDA7381 will be
intrinsically stable with no need of external compensations such as output R-C cells. Due to
the high number of channels involved, this translates into a very remarkable components
saving if compared to similar devices on the market.
To simplify pc-board layout designs, each amplifier stage has its own power ground
externally accessible (pins 2,8,18,24) and one supply voltage pin for each couple of them.
Even more important, this makes it possible to achieve the highest possible degree of
separation among the channels, with remarkable benefits in terms of cross-talk and
distortion features.
About the layout grounding, it is particularly important to connect the AC-GND capacitor (C5)
to the signal GND, as close as possible to the audio inputs ground: this will guarantee high
rejection of any common mode spurious signals.
The SVR capacitor (C6) has also to be connected to the signal GND. Supply filtering
elements (C7, C8) have naturally to be connected to the power-ground and located as close
as possible to the Vs pins.
Pin 1, which is mechanically attached to the device’s tab, needs to be tied to the cleanest
power ground point in the pc-board, which is generally near the supply filtering capacitors.
Figure 10.
An example of circuit able to distinguish between the two occurrences
CLIP DET. (TO GAIN
COMPRESSOR/
TONE CONTROL)
T1
25
D95AU305
TDA7385
+
-
VREF
VREF1
T2
FAULT, THERMAL SHUTDOWN
(TO POWER SUPPLY
SECTION,
μP VOLTAGE
REGULATOR, FLASHING SYSTEM)
+
-
VREF2
T1 << T2
VREF
≥ VREF1 >> VREF2
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| TDA7383 | 22 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TDA7384A | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25 |
| TDA7385 | 35 W, 4 CHANNEL, AUDIO AMPLIFIER, PZIP25 |
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| TDA7388 | 26 W, 1 CHANNEL, AUDIO AMPLIFIER, PZIP25 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7381_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:4 x 25W quad bridge car radio amplifier |
| TDA7382 | 功能描述:音频放大器 4X22W Quad Brdg Amp 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 |
| TDA7382音频功率放大器 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| TDA7383 | 功能描述:音频放大器 4X30W Quad Brdg Amp 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 |
| TDA7384 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:4 x 35W QUAD BRIDGE CAR RADIO AMPLIFIER |
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