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参数资料
| 型号： | LM4889ITL/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| 封装： | MICRO SMD-8 |
| 文件页数： | 1/9页 |
| 文件大小： | 656K |
| 代理商： | LM4889ITL/NOPB |
November 2006
LM4889
1 Watt Audio Power Amplifier
General Description
The LM4889 is an audio power amplifier primarily designed
for demanding applications in mobile phones and other
portable communication device applications. It is capable of
delivering 1 watt of continuous average power to an 8
BTL
load with less than 2% 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 LM4889 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 LM4889 features a low-power consumption shutdown
mode, which is achieved by driving the shutdown pin with a
logic low. Additionally, the LM4889 features an internal ther-
mal shutdown protection mechanism.
The LM4889 contains advanced pop & click circuitry to elim-
inate noise which would otherwise occur during turn-on and
turn-off transitions.
The LM4889 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
■Improved PSRR at 217Hz, 5 - 3.3V
75dB
■Power Output at 5.0V & 2% THD
1.0W(typ.)
■Power Output at 3.3V & 1% THD
400mW(typ.)
■Shutdown Current at 3.3 & 2.6V
0.01A(typ.)
Features
■ Available in space-saving MSOP, SOIC, LLP, and micro
SMD packages
■ Ultra low current shutdown mode (3.3 to 2.6V - 0.01A)
■ Can drive capacitive loads up to 500 pF
■ Improved pop & click circuitry eliminates noises during
turn-on and turn-off transitions
■ 2.2 - 5.5V operation
■ No output coupling capacitors, snubber networks or
bootstrap capacitors required
■ Unity-gain stable
■ External gain configuration capability
Applications
■ Mobile Phones
■ PDAs
■ Portable electronic devices
Typical Application
20035801
FIGURE 1. Typical Audio Amplifier Application Circuit
Boomer is a registered trademark of National Semiconductor Corporation.
2006 National Semiconductor Corporation
200358
www.national.com
LM4889
1
Watt
Audio
Power
Amplifier
相关PDF资料 |
PDF描述 |
|---|---|
| LM4889ITLX/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| LM4889LD/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4890LD/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| LM4890IBPX/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| LM4890IBP/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4889ITLX | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 1W Class-AB 8-Pin uSMD T/R |
| LM4889ITLX/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 |
| LM4889LD/NOPB | 功能描述:IC AMP AUDIO PWR 1W MONO 10LLP 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) |
| LM4889MA | 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 |
| LM4889MA /NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 1W Class-AB 8-Pin SOIC N Rail |
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