- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98267 > TPA0142PWPR (TEXAS INSTRUMENTS INC) 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 PDF資料下載
參數(shù)資料
| 型號： | TPA0142PWPR |
| 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)： | 13/35頁 |
| 文件大?。?/td> | 804K |
| 代理商： | TPA0142PWPR |
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頁當(dāng)前第13頁第14頁第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
OUTPUT COUPLING CAPACITOR, C
(C)
f
c(high) +
1
2 p R
L
C
(C)
3 dB
fc
(4)
USING LOW-ESR CAPACITORS
TPA0142
SLOS248E – JUNE 1999 – REVISED SEPTEMBER 2004
APPLICATION INFORMATION (continued)
In a typical single-supply SE configuration, an output coupling capacitor (C(C)) is required to block the dc bias at
the output of the amplifier to prevent dc currents in the load. As with the input coupling capacitor, the output
coupling capacitor and impedance of the load form a high-pass filter governed by Equation 4.
The main disadvantage, from a performance standpoint, is that load impedances are typically small, driving the
low-frequency corner higher, degrading the bass response. Large values of C(C) are required to pass low
frequencies into the load. Consider the example where a C(C) of 330 F is chosen and loads include 3 , 4 , 8
, 32 , 10 k, and 47 k. Table 2 summarizes the frequency response characteristics of each configuration.
Table 2. Common Load Impedances Vs Low Frequency
Output Characteristics in SE Mode
RL
C(C)
LOWEST FREQUENCY
3
330 F
161 Hz
4
330 F
120 Hz
8
330 F
60 Hz
32
330 F
15 Hz
10,000
330 F
0.05 Hz
47,000
330 F
0.01 Hz
As Table 2 indicates, most of the bass response is attenuated into a 4-
load, an 8- load is adequate,
headphone response is good, and drive into line level inputs (a home stereo for example) is exceptional.
Low-ESR capacitors are recommended throughout this applications section. A real (as opposed to ideal)
capacitor can be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this
resistor minimizes the beneficial effects of the capacitor in the circuit. The lower the equivalent value of this
resistance the more the real capacitor behaves like an ideal capacitor.
20
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPA0142PWP | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| TPA0142PWPG4 | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| TPA0142PWPRG4 | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| TPA0152PWPR | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| TPA0152PWP | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA0142PWPRG4 | 功能描述:音頻放大器 2W Stereo APA With DC Volume Control 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 |
| TPA0152 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH DIGITAL VOLUME CONTROL |
| TPA0152EVM | 功能描述:音頻 IC 開發(fā)工具 TPA0152 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 |
| TPA0152PWP | 功能描述:音頻放大器 2W Stereo A 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 |
| TPA0152PWPG4 | 功能描述:音頻放大器 2W Stereo A 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。