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參數(shù)資料
| 型號(hào)： | TB2905HQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 55 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件頁數(shù)： | 16/19頁 |
| 文件大小： | 439K |
| 代理商： | TB2905HQ |
TB2905HQ
2006-04-28
6
5.
Output Clipping Detection Function (Pin 25)
Pin 25 has open-collector output (active low) structure, as shown in Figure 7.
If the output waveform is clipped, the clipping detection circuit in the IC activates and turns the Q1 NPN
transistor on.
The microcontroller can use this signal to control the volume and tone control circuits, thus improving
sound quality.
Pin 25 should be left open when this function is not used.
Pin 25: Open-collector output (active low)
Output clipping
detector
25
Q1
5 V
L.P.F.
smoothing
circuit
Volume control circuit
Tone control circuit
(Example application)
DC
AC
t
(C)
(A)
(B)
(A) Output AC waveform
(B) Clipping detection circuit
(C) Clipping detection pin
(output of pin 25)
Clipped level
Figure 8
Clipping detection mechanism
5V
GND
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| TB2906HQ | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2906HQ | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2912HQ | 27 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2913HQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2921AHQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TB2905HQ(O) | 功能描述:音頻放大器 25W x 4ch Class-KB Car Pwr 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 |
| TB2906HQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Maximum Power 43 W BTL x 4-ch Audio Power IC |
| TB2913HQ | 制造商:TOSHIBA 制造商全稱: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:音頻放大器 45W x 4-CH high-EFF car power 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 |
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