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參數(shù)資料
| 型號： | TAS5704PAPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| 封裝： | GREEN, PLASTIC, HTQFP-64 |
| 文件頁數(shù)： | 21/38頁 |
| 文件大?。?/td> | 735K |
| 代理商： | TAS5704PAPRG4 |
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Analyzer
20Hz-20kHz
(a)BasicClass-AB
APA
Signal
Generator
PowerSupply
Analyzer
20Hz-20kHz
R
L
(b)TraditionalClass-D
Class-D APA
Signal
Generator
PowerSupply
L
filt
C
filt
R
L
SLOS563A – MARCH 2008 – REVISED AUGUST 2010
www.ti.com
The generator output and amplifier input must be ac-coupled. However, the EVMs already have the ac-coupling
capacitors, (CIN), so no additional coupling is required. The generator output impedance should be low to avoid
attenuating the test signal, and is important because the input resistance of APAs is not high. Conversely, the
analyzer input impedance should be high. The output resistance, ROUT, of the APA is normally in the hundreds of
milliohms and can be ignored for all but the power-related calculations.
Figure 31(a) shows a class-AB amplifier system. It takes an analog signal input and produces an analog signal
output. This amplifier circuit can be directly connected to the AP-II or other analyzer input.
This is not true of the class-D amplifier system shown in Figure 31(b), which requires low-pass filters in most
cases in order to measure the audio output waveforms. This is because it takes an analog input signal and
converts it into a pulse-width modulated (PWM) output signal that is not accurately processed by some
analyzers.
Figure 31. Audio Measurement Systems
28
Copyright 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): TAS5704
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PDF描述 |
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| TAS5704PAPR | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| TAS5704PAP | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| TAS5704PAPG4 | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| TAS5705PAPG4 | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
| TAS5705PAPRG4 | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64 |
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| TAS5705 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC |
| TAS5705EVM2 | 功能描述:音頻 IC 開發(fā)工具 TAS5705EVM2 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 |
| TAS5705PAP | 功能描述:音頻放大器 20W stereo Dig Audio Pwr 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 |
| TAS5705PAPG4 | 功能描述:音頻放大器 20W stereo Dig Aud Pwr 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 |
| TAS5705PAPR | 功能描述:音頻放大器 20W stereo Dig Audio Pwr 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 |
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