- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98274 > TPA6011A4PWPG4 (TEXAS INSTRUMENTS INC) 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 PDF資料下載
參數(shù)資料
| 型號： | TPA6011A4PWPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| 封裝： | GREEN, PLASTIC, HTSSOP-24 |
| 文件頁數(shù)： | 15/35頁 |
| 文件大小： | 744K |
| 代理商： | TPA6011A4PWPG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁
www.ti.com
INPUT RESISTANCE
C
IN
Ri
Rf
Input Signal
*3 dB
+
1
2p CR
i
(1)
INPUT CAPACITOR, C
i
f
c(highpass) +
1
2 p R
i
C
i
3 dB
fc
(2)
C
i +
1
2 p R
i
fc
(3)
TPA6011A4
SLOS392A – FEBRUARY 2002 – REVISED JULY 2004
Each gain setting is achieved by varying the input resistance of the amplifier, which can range from its smallest
value to over six times that value. As a result, if a single capacitor is used in the input high-pass filter, the -3 dB
or cutoff frequency also changes by over six times.
Figure 35. Resistor on Input for Cut-Off Frequency
The input resistance at each gain setting is given in Figure 26.
The -3-dB frequency can be calculated using Equation 1.
In the typical application an input capacitor (Ci) is required to allow the amplifier to bias the input signal to the
proper dc level for optimum operation. In this case, Ci and the input impedance of the amplifier (Ri) form a
high-pass filter with the corner frequency determined in Equation 2.
The value of Ci is important to consider as it directly affects the bass (low frequency) performance of the circuit.
Consider the example where Ri is 70 k and the specification calls for a flat-bass response down to 40 Hz.
Equation 2 is reconfigured as Equation 3.
In this example, Ci is 56.8 nF, so one would likely choose a value in the range of 56 nF to 1 F. A further
consideration for this capacitor is the leakage path from the input source through the input network (Ci) and the
feedback network to the load. This leakage current creates a dc offset voltage at the input to the amplifier that
reduces useful headroom, especially in high gain applications. For this reason, a low-leakage tantalum or
ceramic capacitor is the best choice. When polarized capacitors are used, the positive side of the capacitor
should face the amplifier input in most applications as the dc level there is held at VDD/2, which is likely higher
than the source dc level. Note that it is important to confirm the capacitor polarity in the application.
22
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPA6013A4PWPG4 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO24 |
| TPA6013A4PWPRG4 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO24 |
| TPA6017A2PWPR | 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| TPA6017A2PWP | 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| TPA6017A2PWPG4 | 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA6011A4PWPR | 功能描述:音頻放大器 Stereo Class-AB w/Ster Hdphn Drive 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA6011A4PWPRG4 | 功能描述:音頻放大器 Stereo Class-AB w/Ster Hdphn Drive 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA6012A4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL |
| TPA6012A4PWP | 功能描述:音頻放大器 2W Stereo Audio Power 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA6012A4PWPEVM | 功能描述:音頻 IC 開發(fā)工具 TPA6012A4PWP 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。