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參數資料
| 型號： | LM4902MMX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.675 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | 0.118 INCH, PLASTIC, MSOP-8 |
| 文件頁數： | 1/18頁 |
| 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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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4903 | 制造商:NSC 制造商全稱: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 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機，2-通道（立體聲） 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4904 | 制造商:NSC 制造商全稱: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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