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參數資料
| 型號： | TB2922HQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 46 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM12 |
| 封裝： | 1.78 MM PITCH, PLASTIC, HZIP-12 |
| 文件頁數： | 10/15頁 |
| 文件大?。?/td> | 333K |
| 代理商： | TB2922HQ |
TB2922HQ
VCC
Small current capacity switch
Battery
Stand-By
VCC
From microcomputer
Battery
Stand-By
– Standby Switch Method –
Figure 3
– Conventional Method –
VCC
Large current capacity switch
Battery
VCC
From
microcomputer
Battery
Relay
3.
Muting Function (pin 6)
Audio muting function is enabled when pin 6 is Low. When the time constant of the muting function is
determined by R1 and C4, it should take into account the pop noise. The pop noise, which is generated when
the power or muting function is turned ON/OFF, will vary according to the time constant. (Refer to
Figure4)
The pin 6 is designed to operate off 5 V so that the outside pull-up resistor R1 is determined on the basic of
this value:
ex) When control voltage is changed in to 6 V from 5 V.
6 V/5 V
× 47 k = 56 k
Additionally, as the VCC is rapidly falling, the IC internal low voltage muting operates to eliminate the
large pop noise basically.
The low voltage muting circuit pull 200
μA current into the IC so that the effect of the internal low
voltage muting does not become enough if the R1 is too small value.
To obtain enough operation of the internal low voltage muting, a series resistor, R1 at pin 6 should be
47 k
Ω or more.
6
1 k
Ω
R1
5 V
Mute ON/OFF
control
C4
Figure 4
Muting Function
2007-02-20
4
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PDF描述 |
|---|---|
| TB2923AHQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2923HQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2924AFG | 21 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| TB2924FG | 19.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TB2922HQ(O) | 功能描述:音頻放大器 2ch BTL Audio AMP P-ch N-ch DMOS Out-P RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TB2923AHQ(O) | 制造商:Toshiba America Electronic Components 功能描述:IC |
| TB2923HQ(O) | 功能描述:音頻放大器 51W x 4-CH class-AB car power amp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TB2924FG | 制造商:Toshiba 功能描述:CLASS-D AUDIO POWER AMPLIFIER |
| TB2924FG(O,EL) | 功能描述:音頻放大器 20W x 2ch Class-D Audio Pwr Amp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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