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参数资料
| 型号： | LM4879IBPX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| 封装： | MO-211BC, MICRO, SMD-8 |
| 文件页数： | 1/25页 |
| 文件大小： | 793K |
| 代理商： | LM4879IBPX/NOPB |
LM4879
1.1 Watt Audio Power Amplifier
General Description
The LM4879 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 1.1 watt 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 LM4879 does not require output
coupling capacitors or bootstrap capacitors, and therefore is
ideally suited for lower-power portable applications where
minimal space and power consumption are primary require-
ments.
The LM4879 features a low-power consumption global shut-
down mode, which is achieved by driving the shutdown pin
with logic low. Additionally, the LM4879 features an internal
thermal shutdown protection mechanism.
The LM4879 contains advanced pop & click circuitry which
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4879 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
j PSRR: 5V, 3V @ 217Hz
62dB (typ)
j Power Output at 5V & 1% THD+N
1.1W (typ)
j Power Output at 3V & 1% THD+N
350mW (typ)
j Shutdown Current
0.1A (typ)
Features
n
No output coupling capacitors, snubber networks or
bootstrap capacitors required
n
Unity gain stable
n
Ultra low current shutdown mode
n
Fast turn on: 80ms (typ), 110ms (max) with 1.0F
capacitor
n
BTL output can drive capacitive loads up to 100pF
n
Advanced pop & click circuitry eliminates noises during
turn-on and turn-off transitions
n
2.2V - 5.0V operation
n
Available in space-saving SMD, LLP, and MSOP
packages
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20024301
FIGURE 1. Typical Audio Amplifier Application Circuit
October 2004
LM4879
1.1
W
att
Audio
Power
Amplifier
2004 National Semiconductor Corporation
DS200243
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4879IBP/NOPB | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| LM4879ITLX/NOPB | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4880-D08-T | 0.35 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP8 |
| LM4880-SH2-R | 0.35 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| LM4880-SH2-T | 0.35 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4879ITL | 制造商:Texas Instruments 功能描述:AMP AUDIO BOOMER 1.1W SMD BUMP-9 |
| LM4879ITL/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 |
| LM4879ITLX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1.1 Watt Audio Power Amplifier |
| LM4879ITLX/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 |
| LM4879ITP | 功能描述:IC AMP AUDIO PWR 1.1W MONO 8USMD 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:D 类 输出类型:1-通道（单声道），带立体声耳机 在某负载时最大输出功率 x 通道数量:930mW x 1 @ 8 欧姆; 40mW x 2 @ 16 欧姆 电源电压:2.7 V ~ 5.5 V 特点:消除爆音，差分输入，I²C，静音，关闭，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) 其它名称:MAX97000EWA+T-ND |
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