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参数资料
| 型号： | TB2946HQ |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 26 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件页数： | 14/18页 |
| 文件大小： | 484K |
| 代理商： | TB2946HQ |
TB2946HQ
2009-01-29
5
3. DC Offset Detection
The purpose of the integrated DC offset detector is to avoid an anomalous DC offset on the outputs,
produced by the input capacitor due to leakage current or short-circuit.
Figure 5 DC Offset Detection Mechanism
Amp output
OUT(-)
VCC/2
GND
Time
GND
Voltage at (A)
(pin 25)
Offset detection
threshold voltage
RS2
Time
Voltage at (B)
(LPF output)
OUT(+)
Vref
Elec. vol
25
5 V
LPF
To a microcontroller
+
V
Negative DC offset (
)
(caused by RS2)
Positive DC offset (
+)
(caused by RS1)
VCC/2 (normal DC voltage)
Leakage current
or short-circuit
Vbias
Vref/2
A
B
R
S2
RS1
The microcontroller shuts down the
system if the output is lower than
the specified voltage.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2946HQ(O) | 功能描述:音频放大器 49W x 4-CH Class-AB car power amplifer 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 |
| TB2955HQ(O) | 功能描述:音频放大器 45W 4-CH High-EFF car power amplifer 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 |
| TB-2B.7-AL | 制造商:OKW ENCLOSURES INC 功能描述:ENCLOSURE, TB-2B, WHITE, 6.299 X 3.7 X 1.24 INCHES |
| TB2BS | 制造商:Cooper Bussmann 功能描述:FUSE BASE NH 400A 3POLE SZ:1 |
| TB2-D | 制造商:Cooper Bussmann 功能描述:BASE NH 2 400A 3 POLE RAIL FIXING - Bulk 制造商:COOPER BUSSMANN 功能描述:REPLACED BY TD2-D |
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