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参数资料
| 型号： | LM4902MMX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.675 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封装： | 0.118 INCH, PLASTIC, MSOP-8 |
| 文件页数： | 1/18页 |
| 文件大小： | 772K |
| 代理商： | LM4902MMX/NOPB |
LM4902
265mW at 3.3V Supply Audio Power Amplifier with
Shutdown Mode
General Description
The LM4902 is a bridged audio power amplifier capable of
delivering 265mW of continuous average power into an 8
load with 1% THD+N from a 3.3V power supply.
Boomer audio power amplifiers were designed specifically
to provide high quality output power from a low supply volt-
age while requiring a minimal amount of external compo-
nents. Since the LM4902 does not require output coupling
capacitors, bootstrap capacitors or snubber networks, it is
optimally suited for low-power portable applications.
The LM4902 features an externally controlled, low power
consumption shutdown mode, and thermal shutdown protec-
tion.
The closed loop response of the unity-gain stable LM4902
can be configured by external gain-setting resistors.
Key Specifications
j THD+N at 1kHz for 265mW continuous
average output power into 8
,
V
DD = 3.3V
1.0% (max)
j THD+N at 1kHz for 675mW continuous
average output power into 8
,
V
DD = 5V
1.0% (max)
j Shutdown current
0.1A (typ)
Features
n
MSOP and LLP packaging
n
No output coupling capacitors, bootstrap capacitors, or
snubber circuits are necessary
n
Thermal shutdown protection circuitry
n
Unity-gain stable
n
External gain configuration capability
n
Latest generation ’click and pop’ suppression circuitry
Applications
n
Cellular phones
n
PDA’s
n
Any portable audio application
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20029801
FIGURE 1. Typical Audio Amplifier Application Circuit
February 2002
LM4902
265mW
at
3.3V
Supply
Audio
Power
Amplifier
with
Shutdown
Mode
2002 National Semiconductor Corporation
DS200298
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4903 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1 Watt Audio Power Amplifier |
| LM4903MM | 制造商:Texas Instruments 功能描述:AMP, AUDIO POWER 1.6W, SMD, LLP-28 |
| LM4903MM/NOPB | 功能描述:IC AMP AUDIO PWR 1.07W AB 8MSOP RoHS:是 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) |
| LM4904 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1 Watt Audio Power Amplifier |
| LM4904ITL | 制造商:Texas Instruments 功能描述:IC AMP AUDIO 1W SMD 4904 |
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