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參數資料
| 型號： | TPA6047A4RHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC32 |
| 封裝： | GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 13/25頁 |
| 文件大小： | 982K |
| 代理商： | TPA6047A4RHBR |
C
O
C
O
V
OUT
V
OUT
GND
V
DD
V
DD
V
/2
DD
V
BIAS
Conventional
Capacitor-Less
GND
V
DD
V
SS
V
BIAS
DirectPath
TM
Input-Blocking Capacitors
C(DCINPUT-BLOCKING)
1
2
CIN =
(6)
SLOS601 – OCTOBER 2008.............................................................................................................................................................................................. www.ti.com
Figure 37. Amplifier Applications
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 TPA6047A4 are properly biased. Performance issues
such as pop are optimized with proper input capacitors.
The dc input-blocking capacitors can 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.
CIN is a theoretical capacitor used for mathematical calculations only. Its value is the series combination of the dc
input-blocking capacitors, C(DCINPUT-BLOCKING). Use Equation 6 to determine the value of C(DCINPUT-BLOCKING). For
example, if CIN is equal to 0.22 F, then C(DCINPUT-BLOCKING) is equal to about 0.47 F.
The two C(DCINPUT-BLOCKING) capacitors form a high-pass filter with the input impedance of the TPA6047A4. Use
Equation 6 to calculate CIN, then calculate the cutoff frequency using CIN and the differential input impedance of
the TPA6047A4, RIN, using Equation 7. Note that the differential input impedance changes with gain. See
Table 1 for input impedance values. The frequency and/or capacitance can be determined when one of the two
values are given.
20
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA6047A4
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相關代理商/技術參數 |
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| TPA6047A4RHBRG4 | 功能描述:音頻放大器 2W Stereo Audio 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 |
| TPA6100A2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:50-mW Ultra-Low Voltage Audio Power Amp |
| TPA6100A2D | 功能描述:音頻放大器 Ultra Low Voltage Stereo Headphone 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 |
| TPA6100A2D_06 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:50-mW ULTRALOW VOLTAGE STEREO HEADPHONE AUDIO POWER AMPLIFIER |
| TPA6100A2DG4 | 功能描述:音頻放大器 50mW Ultra Low-Vltg St Headphone Aud 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 |
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