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参数资料
| 型号： | LM4858LD/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.7 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO14 |
| 封装： | 0.118 INCH, 0.80 MM PITCH, LLP-14 |
| 文件页数： | 1/17页 |
| 文件大小： | 683K |
| 代理商： | LM4858LD/NOPB |
LM4858
Mono 1.5 W / Stereo 300mW Power Amplifier
General Description
The LM4858 is an audio power amplifier capable of deliver-
ing 1.5W (typ) of continuous average power into a mono 4
bridged-tied load (BTL) with 1% THD+N or 95mW per chan-
nel of continuous average power into stereo 32
single-
ended (SE) loads with 1% THD+N, using a 5V power supply.
The LM4858 can automatically switch between mono BTL
and stereo SE modes utilizing a headphone sense pin. It is
ideal for any system that provides both a monaural speaker
output and a stereo line or headphone output
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4858 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems.
The LM4858 features an externally controlled, micropower
consumption shutdown mode and thermal shutdown protec-
tion. The unity-gain stable LM4858’s gain is set by external
gain-setting resistors
Key Specifications
n
Output Power at 1% THD+N, 1kHz:
n
LM4858LD 3
BTL
1.9W (typ)
n
LM4858LD 4
BTL
1.7W (typ)
n
LM4858MM 4
BTL
1.5W (typ)
n
LM4858MM,LD 8
BTL
1.1W (typ)
n
LM4858MM,LD 8
SE
300mW (typ)
n
LM4858MM,LD 32
SE
95mW (typ)
n
THD+N at 1kHz, 95mW into 32
SE
1% (typ)
n
Single Supply Operation
2.4 to 5.5V
n
Shutdown Current
18A (typ)
Features
n
Mono 1.5W BTL or stereo 300mW output
n
Logic controlled headphone sense
n
“Click and pop” suppression circuitry
n
No bootstrap capacitors required
n
Thermal shutdown protection
n
Unity-gain stable
n
Available in space-saving MSOP and LLP packaging
Applications
n
Portable computers
n
Desktop computers
n
PDA’s
n
Handheld games
Connection Diagrams
20064729
Top View
10 Lead MSOP
Order Number LM4858MM
See NS Package Number MUB10A
20064728
Top View
14 Lead LLP
Order Number LM4858LD
See NS Package Number LDA14A
Boomer is a registered trademark of National Semiconductor Corporation.
May 2003
LM4858
Mono
1.
5
W
/
Stereo
300mW
Power
Amplifier
2003 National Semiconductor Corporation
DS200647
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4858MM | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Mono 1.5 W / Stereo 300mW Power Amplifier |
| LM4858MM/NOPB | 功能描述:IC AMP AUDIO PWR 1.9W AB 10MSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4859 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4859_05 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4859SP | 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 |
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