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参数资料
| 型号： | LM4893ITLX/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, PBGA9 |
| 封装： | MICRO, BUMP, SMD-9 |
| 文件页数： | 1/22页 |
| 文件大小： | 687K |
| 代理商： | LM4893ITLX/NOPB |
LM4893
1.1 Watt Audio Power Amplifier
General Description
The LM4893 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 LM4893 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 LM4893 features a low-power consumption global shut-
down mode, which is achieved by driving the shutdown pin
with logic low. Additionally, the LM4893 features an internal
thermal shutdown protection mechanism.
The LM4893 contains advanced pop & click circuitry which
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4893 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
j Improved PSRR at 5V, 3V, & 217Hz
62dB (typ)
j Higher Power Output at 5V & 1% THD
1.1W (typ)
j Higher Power Output at 3V & 1% THD
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
Instantaneous turn-on time
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 - 5.5V operation
n
Available in space-saving SMD, SO, and MSOP
packages
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20038001
FIGURE 1. Typical Audio Amplifier Application Circuit
August 2002
LM4893
1.1
W
att
Audio
Power
Amplifier
2002 National Semiconductor Corporation
DS200380
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4894ITLX/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4894ITL/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4894LDX/NOPB | 1.4 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| LM4894LD/NOPB | 1.4 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| LM4894MM/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4893MA | 制造商:Texas Instruments 功能描述:AMP, POWER AUDIO, 1.1W, SMD, SOIC8 |
| LM4893MA/NOPB | 功能描述:IC AMP AUDIO PWR 1.1W MONO 8SOIC 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) |
| LM4893MABD | 功能描述:BOARD EVALUATION LM4893MA RoHS:否 类别:编程器，开发系统 >> 评估板 - 音频放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| LM4893MM | 制造商:Texas Instruments 功能描述:AMP AUDIO POWER 1.1W SMD LLP-10 |
| LM4893MM/NOPB | 功能描述:IC AMP AUDIO PWR 1.1W 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) |
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