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參數資料
| 型號： | TPA0162PWPR |
| 元件分類： | 運動控制電子 |
| 英文描述： | AUDIO AMPLIFIER|DUAL|CMOS|TSSOP|24PIN|PLASTIC |
| 中文描述： | 音頻放大器|雙|的CMOS | TSSOP封裝| 24針|塑料 |
| 文件頁數： | 31/34頁 |
| 文件大小： | 488K |
| 代理商： | TPA0162PWPR |
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TPA0112
2-W STEREO AUDIO POWER AMPLIFIER
WITH FOUR SELECTABLE GAIN SETTINGS
SLOS204B – MAY 1999 – REVISED MARCH 2000
31
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
PC BEEP operation
The PC BEEP input allows a system beep to be sent directly from a computer through the amplifier to the
speakers with few external components. The input is normally activated automatically, but may be selected
manually by pulling PCB ENABLE high. When the PC BEEP input is active, both of the LINEIN and HPIN inputs
are deselected and both the left and right channels are driven in BTL mode with the signal from PC BEEP. The
gain from the PC BEEP input to the speakers is fixed at 0.3 V/V and is independent of the volume setting. When
the PC BEEP input is deselected, the amplifier will return to the previous operating mode and volume setting.
Furthermore, if the amplifier is in shutdown mode, activating PC BEEP will take the device out of shutdown and
output the PC BEEP signal, then return the amplifier to shutdown mode.
When PCB ENABLE is held low, the amplifier will automatically switch to PC BEEP mode after detecting a valid
signal at the PC BEEP input. The preferred input signal is a square wave or pulse train with an amplitude of 1
V
pp
or greater. To be a accurately detected, the signal must have a minimum of 1 V
pp
amplitude, rise and fall
times of less than 0.1
μ
s and a minimum of 8 rising edges. When the signal is no longer detected, the amplifier
will return to its previous operating mode and volume setting.
When PCB ENABLE is held high, PC BEEP is selected and the LINEIN and HPIN inputs are deactivated
regardless of the input signal. PCB ENABLE has an internal 100 k
pulldown resistor and will trip at
approximately V
DD
/2.
If it is desired to ac couple the PC BEEP input, the value of the coupling capacitor should be chosen to satisfy
equation 14:
CPCB
1
2
fPCB(100 k )
(14)
The PC BEEP input can also be dc coupled to avoid using this coupling capacitor. The pin normally sits at midrail
when no signal is present.
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相關代理商/技術參數 |
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|---|---|
| TPA0162PWPRG4 | 功能描述:音頻放大器 2W Stereo APA With Dig Volume Control 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 |
| TPA0172 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH I2C BUS |
| TPA0172EVM | 功能描述:音頻 IC 開發工具 TPA0172 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA0172PWP | 功能描述:音頻放大器 2W Stereo M 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 |
| TPA0172PWPG4 | 功能描述:音頻放大器 Stereo Class-AB 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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