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參數(shù)資料
| 型號： | LM4881N/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP8 |
| 封裝： | MDIP-8 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 475K |
| 代理商： | LM4881N/NOPB |
LM4881
Dual 200 mW Headphone Amplifier with Shutdown Mode
General Description
The LM4881 is a dual audio power amplifier capable of
delivering 200mW of continuous average power into an 8
load with 0.1% THD+N from a 5V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components using surface mount packaging. Since
the LM4881 does not require bootstrap capacitors or snub-
ber networks, it is optimally suited for low-power portable
systems.
The LM4881 features an externally controlled, low power
consumption shutdown mode which is virtually clickless and
popless, as well as an internal thermal shutdown protection
mechanism.
The unity-gain stable LM4881 can be configured by external
gain-setting resistors.
Key Specifications
j THD+N at 1kHz at 125mW
continuous average output
power into 8
0.1% (max)
j THD+N at 1kHz at 75mW
continuous
average output power into 32
0.02% (typ)
j Output power at 10% THD+N
at 1kHz into 8
300mW (typ)
j Shutdown Current
0.7A (typ)
j Supply voltage range
2.7V to 5.5V
Features
n
MSOP surface mount packaging
n
Unity-gain stable
n
External gain configuration capability
n
Thermal shutdown protection circuitry
n
No bootstrap capacitors, or snubber circuits are
necessary
Applications
n
Headphone Amplifier
n
Personal Computers
n
Microphone Preamplifier
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
10000501
*Refer to the Application Information Section for information concerning proper selection of the input and output coupling capacitors.
FIGURE 1. Typical Audio Amplifier Application Circuit
September 2004
LM4881
Dual
200
mW
Headphone
Amplifier
with
Shutdown
Mode
2004 National Semiconductor Corporation
DS100005
www.national.com
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| LM4882MMX/NOPB | 0.48 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4882MX/NOPB | 0.48 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4883SQ/NOPB | 0.4 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| LM4884MH/NOPB | 2.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4882 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:250mW Audio Power Amplifier with Shutdown Mode |
| LM48820 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ground-Referenced, Ultra Low Noise, Fixed Gain, 95mW Stereo Headphone Amplifier |
| LM48820TM | 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM48820TM/NOPB | 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM48820TMBD | 功能描述:BOARD EVAL GROUND REF AUDIO AMP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer®, PowerWise® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
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