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参数资料
| 型号： | LM4872ITP/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 4/17页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 1W MONO 8USMD |
| 标准包装： | 1 |
| 系列： | Boomer® |
| 类型： | AB 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 1W x 1 @ 8 欧姆 |
| 电源电压： | 2 V ~ 5.5 V |
| 特点： | 关闭，热保护 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 8-uSMD |
| 封装/外壳： | 8-VFBGA |
| 包装： | 标准包装 |
| 其它名称： | LM4872ITPDKR |
Application Information (Continued)
The LM4872 is unity-gain stable and requires no external
components besides gain-setting resistors, an input coupling
capacitor, and proper supply bypassing in the typical appli-
cation. However, if a closed-loop differential gain of greater
than 10 is required, a feedback capacitor may be needed as
shown in Figure 2 to bandwidth limit the amplifier. This
feedback capacitor creates a low pass filter that eliminates
possible high frequency oscillations. Care should be taken
when calculating the -3dB frequency in that an incorrect
combination of R
3 and C4 will cause rolloff before 20kHz. A
typical combination of feedback resistor and capacitor that
will not produce audio band high frequency rolloff is R
3 =
20k
and C
4 = 25pf. These components result in a -3dB
point of approximately 320 kHz. It is not recommended that
the feedback resistor and capacitor be used to implement a
band limiting filter below 100kHZ.
10123024
FIGURE 2. Higher Gain Audio Amplifier
LM4872
www.national.com
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4872ITPX/NOPB | 制造商:Texas Instruments 功能描述: |
| LM4873 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873_02 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873IBL | 功能描述:IC AMP AUDIO PWR 3W STER 20USMD RoHS:否 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 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) |
| LM4873LQ | 制造商:Rochester Electronics LLC 功能描述:DUAL 1.1W AUDIO AMPLIFIER - Bulk |
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