- 您現在的位置：買賣IC網 > PDF目錄98273 > TPA3122D2N (TEXAS INSTRUMENTS INC) 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP20 PDF資料下載
參數資料
| 型號： | TPA3122D2N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數： | 4/21頁 |
| 文件大?。?/td> | 507K |
| 代理商： | TPA3122D2N |
www.ti.com
Single Ended Output Capacitor, Co
Output Filter and Frequency Response
LOUT /ROUT
L
filter
C
filter
LOUT
L
filter
C
filter
L
filter
C
filter
ROUT
SLOS527A – DECEMBER 2007 – REVISED DECEMBER 2007
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 2 V, which is likely higher than the source dc level. Note that it is
important to confirm the capacitor polarity in the application. Additionally, lead-free solder can create dc offset
voltages and it is important to ensure that boards are cleaned properly.
In single ended (SE) applications, the DC blocking capacitor forms a high pass filter with speaker impedance.
The frequency response rolls of with decreasing frequency at a rate of 20dB/decade. The cutoff frequency is
determined by
fc = 1/2
×πC
oZL
Table 2 shows some common component values and the associated cutoff frequencies:
Table 2. Common Filter Responses
CSE – DC Blocking Capacitor (F)
Speaker Impedance (
)
fc = 60 Hz
fc = 40 Hz
fc = 20 Hz
4
680
1000
2200
8
330
470
1000
For the best frequency response, a flat passband output filter (second order Butterworth) may be used. The
output filter components consist of the series inductor and capacitor to ground at the LOUT and ROUT pins.
There are several possible configurations depending on the speaker impedance and whether the output
configuration is Single Ended (SE) or Bridge Tied Load (BTL). Table 3 list several possible arrangements.
Table 3. Recommended Filter Output Components
Output Configuration
Speaker Impedance (
)
Filter Inductor (
H)
Filter Capacitor (nF)
4
22
680
Single Ended (SE)
8
47
390
4
10
1500
Bridge Tied Load
8
22
680
Figure 26. BTL Filter Configuration
Figure 27. SE Filter Configuration
12
Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s) :TPA3122D2
相關PDF資料 |
PDF描述 |
|---|---|
| TPA3123D2PWPG4 | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3123D2PWPRG4 | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3123D2PWPR | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3123D2PWP | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3124D2PWPG4 | AUDIO AMPLIFIER, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA3123D2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:25-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
| TPA3123D2EVM | 功能描述:音頻 IC 開發工具 TPA3123D2EVM Eval Mod 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 |
| TPA3123D2PWP | 功能描述:音頻放大器 25W St 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 |
| TPA3123D2PWPG4 | 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 |
| TPA3123D2PWPR | 功能描述:音頻放大器 25W St 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 |
發布緊急采購，3分鐘左右您將得到回復。