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参数资料
| 型号： | LM4755MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 11 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| 封装： | WAFER |
| 文件页数： | 2/19页 |
| 文件大小： | 756K |
| 代理商： | LM4755MWC |
Application Information (Continued)
PREVENTING OSCILLATIONS
With the integration of the feedback and bias resistors on-
chip, the LM4755 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
terminated 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 applications, this termination is typically provided by
the previous 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
circuitry pulls down the half-supply bias line, shutting down
the preamp section of the LM4755. Due to the wide operat-
ing supply range of the LM4755, the threshold is set to just
under 9V. There may be certain applications where a higher
DS100059-30
FIGURE 4. Bridge-Mode Application
DS100059-31
DS100059-37
FIGURE 5. THD+N vs P
OUT for Bridge-Mode Application
LM4755
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| LM4766MWC | 40 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4755T | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 11W Audio Power Amplifier with Mute |
| LM4755T/NOPB | 功能描述:IC AMP AUDIO PWR 11W AB TO220-9 RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4755T/NOPB | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
| LM4755TS | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4755TS/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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