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LM4893 PDF预览

LM4893

更新时间: 2024-01-18 05:40:55
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器功率放大器
页数 文件大小 规格书
22页 701K
描述
1.1 Watt Audio Power Amplifier

LM4893 技术参数

是否Rohs认证: 符合生命周期:Obsolete
包装说明:TSSOP, TSSOP10,.19,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.84标称带宽:20 kHz
商用集成电路类型:AUDIO AMPLIFIER谐波失真:1%
JESD-30 代码:S-PDSO-G10JESD-609代码:e3
长度:3 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:10最高工作温度:85 °C
最低工作温度:-40 °C标称输出功率:1.1 W
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP10,.19,20封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:2.6/5 V认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Audio/Video Amplifiers
最大压摆率:10 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):2.2 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3 mm

LM4893 数据手册

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August 2004  
LM4893  
1.1 Watt Audio Power Amplifier  
General Description  
Key Specifications  
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 5VDC  
power supply.  
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Improved PSRR at 5V, 3V, & 217Hz  
62dB (typ)  
1.1W (typ)  
Higher Power Output at 5V & 1% THD  
Higher Power Output at 3V & 1% THD 350mW (typ)  
Shutdown Current 0.1µA (typ)  
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.  
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  
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.  
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 µSMD, SO, and MSOP  
packages  
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.  
Applications  
n Mobile Phones  
n PDAs  
n Portable electronic devices  
Typical Application  
20038001  
FIGURE 1. Typical Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2004 National Semiconductor Corporation  
DS200380  
www.national.com  

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