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參數資料
| 型號： | LM4881M |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Dual 200 mW Headphone Amplifier with Shutdown Mode |
| 中文描述： | 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 413K |
| 代理商： | LM4881M |
LM4881
Dual 200 mW Headphone Amplifier with Shutdown Mode
General Description
The LM4881 is a dual audio power amplifier capable of deliv-
ering 200 mW of continuous average power into an 8
load
with 0.1% (THD) 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
n
THD at 1 kHz at 125 mW
continuous average output
power into 8
n
THD at 1 kHz at 75 mW continuous
average output power into 32
n
Output power at 10% THD+N
at 1 kHz into 8
n
Shutdown Current
0.1% (max)
0.02% (typ)
300 mW (typ)
0.7 μA (typ)
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
Connection Diagrams
Boomer
is a registered trademark of National Semiconductor Corporation.
DS100005-1
Application Information
Section for information concerning
*Refer to the
FIGURE 1. Typical Audio Amplifier Application Circuit
MSOP Package
DS100005-2
SOP and DIP Package
DS100005-38
Top View
Order Number LM4881MM, LM4881M, or LM4881N
See NS Package Number MUA08A, M08A, or N08E
September 1997
L
1999 National Semiconductor Corporation
DS100005
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4881MM | Dual 200 mW Headphone Amplifier with Shutdown Mode |
| LM4881N | Dual 200 mW Headphone Amplifier with Shutdown Mode |
| LM4882 | 250mW Audio Power Amplifier with Shutdown Mode |
| LM4882M | 250mW Audio Power Amplifier with Shutdown Mode |
| LM4882MM | 250mW Audio Power Amplifier with Shutdown Mode |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4881M/NOPB | 功能描述:音頻放大器 BOOMER DUAL 200MW HEADPHONE AMP RoHS:否 制造商:STMicroelectronics 產品: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 |
| LM4881MM | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
| LM4881MM/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
| LM4881MM/SL110729 | 制造商:Texas Instruments 功能描述: |
| LM4881MMX | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
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