- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30751 > LM4752T/NOPB (NATIONAL SEMICONDUCTOR CORP) 7 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM7 PDF資料下載
參數(shù)資料
| 型號： | LM4752T/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 7 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM7 |
| 封裝： | LEAD FREE, PLASTIC, TO-220, 7 PIN |
| 文件頁數(shù)： | 7/22頁 |
| 文件大?。?/td> | 521K |
| 代理商： | LM4752T/NOPB |
10003930
FIGURE 5. Bridge-Mode Application
10003931
10003937
FIGURE 6. THD+N vs. P
OUT for Bridge-Mode Application
PREVENTING OSCILLATIONS
With the integration of the feedback and bias resistors on-
chip, the LM4752 fits into a very compact package. However,
due to the close proximity of the non-inverting input pins to
the corresponding output pins, the inputs should be AC ter-
minated at all times. If the inputs are left floating, the amplifier
will have a positive feedback path through high impedance
coupling, resulting in a high frequency oscillation. In most ap-
plications, this termination is typically provided by the previ-
ous stage's source impedance. If the application will require
an external signal, the inputs should be terminated to ground
with a resistance of 50 k
or less on the AC side of the input
coupling capacitors.
UNDERVOLTAGE SHUTDOWN
If the power supply voltage drops below the minimum oper-
ating supply voltage, the internal under-voltage detection cir-
cuitry pulls down the half-supply bias line, shutting down the
preamp section of the LM4752. Due to the wide operating
supply range of the LM4752, the threshold is set to just under
9V. There may be certain applications where a higher thresh-
old voltage is desired. One example is a design requiring a
high operating supply voltage, with large supply and bias ca-
pacitors, and there is little or no other circuitry connected to
the main power supply rail. In this circuit, when the power is
disconnected, the supply and bias capacitors will discharge
at a slower rate, possibly resulting in audible output distortion
as the decaying voltage begins to clip the output signal. An
15
www.national.com
LM4752
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4753T | 11.8 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| LM4755MWC | 11 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM4755MDC | 11 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM4766MDC | 40 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM4766MWC | 40 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4752TS | 功能描述:音頻放大器 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 |
| LM4752TS/NOPB | 功能描述:音頻放大器 STEREO 11W 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 |
| LM4753 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Control |
| LM4753T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4755 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 11W Audio Power Amplifier with Mute |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。