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参数资料
| 型号： | LM4900MX/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： | SOP-8 |
| 文件页数： | 1/19页 |
| 文件大小： | 772K |
| 代理商： | LM4900MX/NOPB |
LM4900
265mW at 3.3V Supply Audio Power Amplifier with
Shutdown Mode
General Description
The LM4900 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 LM4900 does not require output coupling
capacitors, bootstrap capacitors or snubber networks, it is
optimally suited for low-power portable applications.
The LM4900 features an externally controlled, low power
consumption shutdown mode, and thermal shutdown protec-
tion.
The closed loop response of the unity-gain stable LM4900
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, LLP, and SOP 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.
DS200064-1
FIGURE 1. Typical Audio Amplifier Application Circuit
September 2001
LM4900
265mW
at
3.3V
Supply
Audio
Power
Amplifier
with
Shutdown
Mode
2001 National Semiconductor Corporation
DS200064
www.national.com
相关PDF资料 |
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| LM4900LDX/NOPB | 0.675 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4901IBPX | 1.05 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4901IBP | 1.05 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4901MM/NOPB | 1.6 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4901LD/NOPB | 1.6 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4901 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| LM4901AUL WAF | 制造商:Texas Instruments 功能描述: |
| LM4901IBL | 制造商:未知厂家 制造商全称:未知厂家 功能描述:AUDIO AMPLIFIER|SINGLE|BGA|9PIN|PLASTIC |
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| LM4901IBP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:AUDIO AMPLIFIER|SINGLE|BGA|8PIN|PLASTIC |
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