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参数资料
| 型号： | TPA6130A2RTJR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQCC20 |
| 封装： | 4 X 4 MM, GREEN, PLASTIC, QFN-20 |
| 文件页数： | 5/28页 |
| 文件大小： | 1198K |
| 代理商： | TPA6130A2RTJR |
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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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PDF描述 |
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| TPA6130A2RTJT | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQCC20 |
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| TPA6130A2RTJRG4 | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQCC20 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA6130A2RTJR | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC 制造商:Texas Instruments 功能描述:IC, AUDIO PWR AMP, CLASS AB 138mW QFN-20 |
| TPA6130A2RTJRG4 | 功能描述:音频放大器 138mW DirectPath St Headphone Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6130A2RTJT | 功能描述:音频放大器 138-mW Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6130A2RTJTG4 | 功能描述:音频放大器 138mW DirectPath St Headphone Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6130A2YZH | 制造商:TI 制造商全称:Texas Instruments 功能描述:138-mW DIRECTPATH STEREO HEADPHONE AMPLIFIER WITH I2C VOLUME CONTROL |
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