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參數(shù)資料
| 型號： | TPA6130A2RTJTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQCC20 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, QFN-20 |
| 文件頁數(shù)： | 5/28頁 |
| 文件大小： | 1198K |
| 代理商： | TPA6130A2RTJTG4 |
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C
O
C
O
V
OUT
V
OUT
GND
V
DD
V
DD
V
/2
DD
V
BIAS
Conventional
Capless
GND
V
DD
V
SS
V
BIAS
DirectPath
TM
Input-Blocking Capacitors
SLOS488B – NOVEMBER 2006 – REVISED FEBRUARY 2008
connected to the headphone jack shield pin. This is the voltage on which the audio output signals are centered.
This voltage reference is half of the amplifier power supply to allow symmetrical swing of the output voltages. Do
not connect the shield to any GND reference or large currents will result. The scenario can happen if, for
example, an accessory other than a floating GND headphone is plugged into the headphone connector. See the
second block diagram and waveform in Figure 36.
Figure 36. Amplifier Applications
The DirectPath amplifier architecture operates from a single supply but makes use of an internal charge pump
to provide a negative voltage rail. Combining the user provided positive rail and the negative rail generated by
the IC, the device operates in what is effectively a split supply mode. The output voltages are now centered at
zero volts with the capability to swing to the positive rail or negative rail. The DirectPath amplifier requires no
output dc blocking capacitors, and does not place any voltage on the sleeve. The bottom block diagram and
waveform of Figure 36 illustrate the ground-referenced headphone architecture. This is the architecture of the
TPA6130A2.
DC input-blocking capacitors block the dc portion of the audio source, and allow the inputs to properly bias.
Maximum performance is achieved when the inputs of the TPA6130A2 are properly biased. Performance issues
such as pop are optimized with proper input capacitors.
The dc input-blocking capacitors may be removed provided the inputs are connected differentially and within the
input common mode range of the amplifier, the audio signal does not exceed ±3 V, and pop performance is
sufficient.
Copyright 2006–2008, Texas Instruments Incorporated
13
Product Folder Link(s): TPA6130A2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA6130A2YZH | 制造商:TI 制造商全稱:Texas Instruments 功能描述:138-mW DIRECTPATH STEREO HEADPHONE AMPLIFIER WITH I2C VOLUME CONTROL |
| TPA6130A2YZHR | 功能描述:音頻放大器 138-mW DirectPath Stereo Headphone 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 |
| TPA6130A2YZHT | 功能描述:音頻放大器 138-mW DirectPath Stereo Headphone 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 |
| TPA6132A2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:25-mW DIRECTPATH? STEREO HEADPHONE AMPLIFIER WITH POP SUPPRESSION |
| TPA6132A2EVM2 | 功能描述:音頻 IC 開發(fā)工具 TPA6132A2EVM2 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)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 |
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