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LM4897MM

更新时间： 2024-01-19 00:15:08
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
14页 609K
描述
1.1 Watt Audio Power Amplifier with Fade-In and Fade-Out

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中文翻译

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LM4897MM 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
风险等级：5.84商用集成电路类型：AUDIO AMPLIFIER
JESD-30 代码：R-PDSO-G10JESD-609代码：e3
湿度敏感等级：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：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：2.6/5 V认证状态：Not Qualified
子类别：Audio/Video Amplifiers最大压摆率：9 mA
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
Base Number Matches：1

LM4897MM 数据手册

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May 2003  
LM4897  
1.1 Watt Audio Power Amplifier with Fade-In and  
Fade-Out  
General Description  
Key Specifications  
The LM4897 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 1.1W of continuous average power to an 8Ω BTL  
load with less than 1% distortion (THD+N) from a +5VDC  
power supply.  
j
j
j
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Improved PSRR at 5V, 3V, & 217Hz  
Higher PO at 5V, THD+N = 1%  
Higher PO at 3V, THD+N = 1%  
Shutdown Current  
62dB (typ)  
1.1W (typ)  
350mW (typ)  
0.1µA (typ)  
The LM4897 contains advanced pop and click circuitry that  
eliminate noises which would otherwise occur during turn-on  
and turn-off transitions. It also contains a fade-in/fade-out  
feature that eliminates unnatural sound generated by  
asserting/de-asserting the SHUTDOWN pin. The LM4897 is  
unity-gain stable and can be configured by external gain-  
setting resistors.  
Features  
n No output coupling capacitors, snubber networks or  
bootstrap capacitors required  
n Unity gain stable  
n Ultra low current shutdown mode  
n Fade-In/Fade-Out  
The LM4897 features a low-power consumption global shut-  
down mode, which is achieved by driving the shutdown pin  
with logic low. Additionally, the LM4897 features an internal  
thermal shutdown protection mechanism.  
n BTL output can drive capacitive loads up to 100pF  
n Advanced pop and click circuitry eliminates noises  
during turn-on and turn-off transitions  
n 2.6V - 5.5V operation  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4897 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.  
n Available in a space-saving SO package  
Applications  
n Mobile Phones  
n PDAs  
n Portable electronic devices  
Connection Diagrams  
Mini Small Outline (MSOP) Package  
MSOP Marking  
20050930  
Top View  
Order Number LM4897MM  
See NS package Number MUB10A  
200509D0  
Top View  
G - Boomer Family  
97 - LM4897MM  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2003 National Semiconductor Corporation  
DS200509  
www.national.com  
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