參數(shù)資料
型號(hào)： TPA4411YZH
廠商： Texas Instruments, Inc.
英文描述： Filter Module with Resistor Network
中文描述： 80兆瓦的無(wú)蓋立體聲耳機(jī)驅(qū)動(dòng)器
文件頁(yè)數(shù)： 17/21頁(yè)
文件大?。?/td> 859K
代理商： TPA4411YZH
www.ti.com
Decoupling Capacitors
The TPA4411 is a capless headphone amplifier that requires adequate power supply decoupling to ensure that
the noise and total harmonic distortion (THD) are low. A good low equivalent-series-resistance (ESR) ceramic
capacitor, typically 2.2 μF, placed as close as possible to the device V
DD
lead works best. Placing this decoupling
capacitor close to the TPA4411 is important for the performance of the amplifier. For filtering lower frequency
noise signals, a 10-μF or greater capacitor placed near the audio power amplifier would also help, but it is not
required in most applications because of the high PSRR of this device.
Supply Voltage Limiting At 4.5 V
The TPA4411 has a built-in charge pump which serves to generate a negative rail for the headphone amplifier.
Because the headphone amplifier operates from a positive voltage and negative voltage supply, circuitry has
been implemented to protect the devices in the amplifier from an overvoltage condition. Once the supply is above
4.5 V, the TPA4411 can shut down in an overvoltage protection mode to prevent damage to the device. The
TPA4411 resumes normal operation once the supply is reduced to 4.5 V or lower.
Layout Recommendations
Exposed Pad On TPA4411RTJ Package Option
SGND and PGND Connections
TPA4411
SLOS430–AUGUST 2004
APPLICATION INFORMATION (continued)
The exposed metal pad on the TPA4411RTJ package must be soldered down to a pad on the PCB in order to
maintain reliability.
The pad on the PCB should be allowed to float and not be connected to ground or power
.
Connecting this pad to power or ground prevents the device from working properly because it is connected
internally to PVSS.
The SGND and PGND pins of the TPA4411 must be routed separately back to the decoupling capacitor in order
to provide proper device operation. If the SGND and PGND pins are connected directly to each other, the part
functions without risk of failure, but the noise and THD performance do not meet the specifications.
17
相關(guān)PDF資料
PDF描述
TPA4411RTJ 80-mW CAPLESS STEREO HEADPHONE DRIVER
TPA751GQS 700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS
TPA751GQSR Amplifier. Other
TPC-1260 Intel㈢ Pentium㈢ M/Celeron㈢ M Touch Panel Computer with 12.1
TPC-1261H Intel㈢ Pentium㈢ M/Celeron㈢ M Touch Panel Computer with 12.1
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA4411YZHR 功能描述:音頻放大器 80mW Cap-free Stereo Headphone Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
TPA4411YZHT 功能描述:音頻放大器 80mW Cap-free Stereo Headphone Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
TPA4499 制造商:FILTRAN 制造商全稱(chēng):Filtran LTD 功能描述:Audio Bridging Transformer
TPA4681D 制造商:Texas Instruments 功能描述:
TPA4860 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:1-W MONO AUDIO POWER AMPLIFIER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*