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参数资料
| 型号： | TB2905HQ |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 55 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件页数： | 13/17页 |
| 文件大小： | 278K |
| 代理商： | TB2905HQ |
TB2905HQ
2005-08-17
5
4.
Offset Detection Function
Pin 25 can be used to detect an offset voltage that may appear on an output pin due to input capacitor
leakage or other reasons.
Output DC
voltage (
+)
Offset detection threshold
(RS1 detection)
VCC/2
(normal DC voltage)
GND
Time
GND
Voltage at point A
(output of pin 25)
Voltage at point B
(LPF output)
Offset detection threshold
(RS2 detection)
Time
RS2
Figure 6
Example application and detection mechanism
Vref
Electrical
volume
25
5 V
L.P.F.
smoothing
circuit
To microcontroller The
microcontroller shuts down the
system if the output is lower than
the specified voltage.
+
V
Output offset voltage
(upon input capacitor leakage or short-circuit)
Output DC voltage (
) (for RS2)
Output DC voltage (
+) (for RS1)
VCC/2 (normal DC voltage)
Capacitor leakage
or short-circuit
Vbias
Vref/2
A
B
R
S2
RS1
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| TB2905HQ | 55 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2905HQ(O) | 功能描述:音频放大器 25W x 4ch Class-KB Car Pwr 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 |
| TB2906HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Maximum Power 43 W BTL x 4-ch Audio Power IC |
| TB2913HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Maximum Power 47 W BTL 】 4-ch Audio Power IC |
| TB2915AHQ(O) | 制造商:Toshiba America Electronic Components 功能描述:IC AMP BTL AUDIO 45W 4CH HZIP25 |
| TB2915HQ(O) | 功能描述:音频放大器 45W x 4-CH high-EFF car power 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 |
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