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参数资料
| 型号： | LM4995SDX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.25 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8 |
| 封装： | 3 X 3 MM, 0.5 PICTH, ROHS COMPLIANT, LLP-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 808K |
| 代理商： | LM4995SDX/NOPB |
LM4995
1.3 W Audio Power Amplifier
General Description
The LM4995 is an audio power amplifier primarily designed
for demanding applications in mobile phones and other por-
table communication device applications. It is capable of
delivering 1.2W of continuous average power to an 8
BTL
load with less than 1% distortion (THD+N) from a 5V
DC
power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The LM4995 does not require output
coupling capacitors or bootstrap capacitors, and therefore is
ideally suited for mobile phone and other low voltage appli-
cations where minimal power consumption is a primary re-
quirement.
The LM4995 features a low-power consumption shutdown
mode, which is achieved by driving the shutdown pin with
logic low. Additionally, the LM4995 features an internal ther-
mal shutdown protection mechanism.
The LM4995 contains advanced pop & click circuitry which
eliminates noise which would otherwise occur during turn-on
and turn-off transitions.
The LM4995 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
j PSRR at 3.6V (217Hz & 1kHz)
75dB
j Output Power at 5.0V, 1% THD+N, 8
1.3W (typ)
j Output Power at 3.6V, 1% THD+N, 8
625mW (typ)
j Shutdown Current
0.01A (typ)
Features
n
Available in space-saving 0.4mm pitch SMD package
n
Ultra low current shutdown mode
n
BTL output can drive capacitive loads
n
Improved pop & click circuitry eliminates noise during
turn-on and turn-off transitions
n
2.4 - 5.5V operation
n
No output coupling capacitors, snubber networks or
bootstrap capacitors required
n
Unity-gain stable
n
External gain configuration capability
n
LLP package: 0.5mm pitch,3x3mm
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
201599D3
FIGURE 1. Typical Audio Amplifier Application Circuit
August 2006
LM4995
1.3
W
Audio
Power
Amplifier
2006 National Semiconductor Corporation
DS201599
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4995TM/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4995TMBD | 功能描述:音频 IC 开发工具 LM4995 DEMO BOARD RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| LM4995TMX/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4A-3M4 | 制造商:BACO Controls Inc 功能描述: |
| LM-4C-30F2-S | 功能描述:基本/快动开关 Foot Switch RoHS:否 制造商:Omron Electronics 触点形式:SPDT 执行器:Lever 电流额定值:5 A 电压额定值 AC:250 V 电压额定值 DC:30 V 功率额定值: 工作力:120 g IP 等级:IP 67 NEMA 额定值: 端接类型:Wire 安装:Panel |
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