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| 型號： | TPA3120D2_07 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 25-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
| 中文描述： | 25 W立體聲D類音頻功率放大器 |
| 文件頁數(shù)： | 21/27頁 |
| 文件大小： | 631K |
| 代理商： | TPA3120D2_07 |
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SE Input and SE Output (TPA312002 Stereo Configuration)
The SE input and output configuration is used with class-AB amplifiers. A block diagram of a fully SE
measurement circuit is shown in
Figure 30
. SE inputs normally have one input pin per channel. In some cases,
two pins are present; one is the signal and the other is ground. SE outputs have one pin driving a load through
an output ac coupling capacitor and the other end of the load is tied to ground. SE inputs and outputs are
considered to be unbalanced, meaning one end is tied to ground and the other to an amplifier input/output.
V
GEN
C
IN
C
L
R
IN
R
GEN
Twisted-Pair Wire
Generator
Evaluation Module
Audio Power
Amplifier
Twisted-Pair Wire
R
L
R
ANA
C
ANA
Analyzer
R
ANA
C
ANA
L
filt
C
filt
TPA3120D2
SLOS507C–MARCH 2007–REVISED MAY 2007
The generator should have unbalanced outputs, and the signal should be referenced to the generator ground for
best results. Unbalanced or balanced outputs can be used when floating, but they may create a ground loop that
will effect the measurement accuracy. The analyzer should have balanced inputs to cancel out any
common-mode noise in the measurement.
Figure 30. SE Input—SE Output Measurement Circuit
The following general rules should be followed when connecting to APAs with SE inputs and outputs:
Use an unbalanced source to supply the input signal.
Use an analyzer with balanced inputs.
Use twisted pair wire for all connections.
Use shielding when the system environment is noisy.
Ensure the cables from the power supply to the APA, and from the APA to the load, can handle the large
currents (see
Table 4
)
21
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| TPA3120D2EVM | 功能描述:音頻 IC 開發(fā)工具 TPA3120D2 Evaluation Module 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 |
| TPA3120D2PWP | 功能描述:音頻放大器 25-W Stereo Class-D 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 |
| TPA3120D2PWP | 制造商:Texas Instruments 功能描述:Audio Power Amplifiers |
| TPA3120D2PWPG4 | 功能描述:音頻放大器 25W Stereo Class D Aud 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 |
| TPA3120D2PWPR | 功能描述:音頻放大器 25-W Stereo Class-D 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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