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| 型号： | LM4851LQ/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| 封装： | LLP-24 |
| 文件页数： | 1/22页 |
| 文件大小： | 1126K |
| 代理商： | LM4851LQ/NOPB |
LM4851
Integrated Audio Amplifier System
General Description
The LM4851 is an audio power amplifier system capable of
delivering 1.1W (typ) of continuous average power into a
mono 8
bridged-tied load (BTL) with 1% THD+N and
115mW (typ) per channel of continuous average power into
stereo 32
BTL loads with 0.5% THD+N, using a 5V power
supply.
The LM4851 features a 32 step digital volume control and
eight distinct output modes. The digital volume control and
output modes are programmed through a three-wire SPI
serial control interface, that allows flexibility in routing and
mixing audio channels. The LM4851 has 3 inputs: one pair
for a two-channel stereo signal and the third for a single-
channel mono input.
The LM4851 is designed for cellular phone, PDA, and other
portable handheld applications. It delivers high quality output
power from a surface-mount package and requires only five
external components.
The industry leading micro SMD package utilizes only 2mm
x 2.3mm of PCB space, making the LM4851 the most space
efficient audio sub system available today.
Key Specifications
n
THD+N at 1kHz, 1.5W into 4
BTL (LQ)
1% (typ)
n
THD+N at 1kHz, 1.1W into 8
BTL
1% (typ)
n
THD+N at 1kHz, 115mW into 32
BTL
0.5% (typ)
n
Single Supply Operation
2.6 to 5.0V
Features
n
Mono 1.1W (typ) and stereo 115mW (typ) output
n
SPI programmable 32 step digital volume control
(-40.5dB to +6dB)
n
Eight distinct SPI programmable output modes
n
micro-SMD and LLP surface mount packaging
n
“Click and pop” suppression circuitry
n
Thermal shutdown protection
n
Low shutdown current (0.1A, typ)
Applications
n
Mobile phones
n
PDAs
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20040831
FIGURE 1. Typical Audio Amplifier Application Circuit
December 2002
LM4851
Integrated
Audio
Amplifier
System
2002 National Semiconductor Corporation
DS200408
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4852LQ/NOPB | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| LM4852ITL/NOPB | 1.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| LM4854MT/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4854MTX/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4854LD/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4852 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Integrated Audio Amplifier System |
| LM48520 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum |
| LM48520TL | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 2-CH Stereo 1.3W Class-D 25-Pin uSMD T/R |
| LM48520TL/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 |
| LM48520TLBD | 功能描述:音频 IC 开发工具 LM48520TLBD EVAL 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 |
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