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LM4666SDX/NOPB PDF预览

LM4666SDX/NOPB

更新时间： 2024-09-29 21:21:23
品牌 Logo 应用领域
德州仪器 - TI 放大器光电二极管商用集成电路
页数 文件大小 规格书
22页 1490K
描述
AUDIO AMPLIFIER

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LM4666SDX/NOPB 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：SON, SOLCC14,.12,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.49商用集成电路类型：AUDIO AMPLIFIER
JESD-30 代码：R-PDSO-N14JESD-609代码：e3
湿度敏感等级：1功能数量：2
端子数量：14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：SON封装等效代码：SOLCC14,.12,20
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：3/5 V
认证状态：Not Qualified子类别：Audio/Video Amplifiers
最大压摆率：10 mA表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD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
Base Number Matches：1

LM4666SDX/NOPB 数据手册

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LM4666, LM4666SDBD  
www.ti.com  
SNAS189A –MAY 2004–REVISED MAY 2013  
LM4666  
Filterless High Efficiency Stereo 1.2W Switching  
Audio Amplifier  
Check for Samples: LM4666, LM4666SDBD  
1
FEATURES  
DESCRIPTION  
The LM4666 is a fully integrated single-supply high  
2
•
No Output Filter Required for Inductive  
Transducers  
efficiency switching audio amplifier. It features an  
innovative modulator that eliminates the LC output  
filter used with typical switching amplifiers.  
Eliminating the output filter reduces parts count,  
simplifies circuit design, and reduces board area. The  
LM4666 processes analog inputs with a delta-sigma  
modulation technique that lowers output noise and  
THD when compared to conventional pulse width  
modulators.  
•
•
•
•
•
•
•
Selectable Gain of 6dB or 12dB  
Very Fast Turn On Time: 6ms (typ)  
Minimum External Components  
"Click and Pop" Suppression Circuitry  
Micro-Power Shutdown Mode  
Short Circuit Protection  
Available in Space-Saving NHK0014A Package  
The LM4666 is designed to meet the demands of  
mobile phones and other portable communication  
devices. Operating on a single 3V supply, it is  
APPLICATIONS  
capable of driving 8Ω transducer loads at  
a
•
•
•
Mobile Phones  
PDAs  
continuous average output of 450mW with less than  
1%THD+N. Its flexible power supply requirements  
allow operation from 2.8V to 5.5V.  
Portable Electronic Devices  
The LM4666 has high efficiency with an 8Ω  
transducer load compared to a typical Class AB  
amplifier. With a 3V supply, the IC's efficiency for a  
100mW power level is 79%, reaching 84% at 450mW  
output power.  
KEY SPECIFICATIONS  
•
•
•
•
•
•
Efficiency at 3V, 100mW into 8Ω Transducer:  
79% (typ)  
Efficiency at 3V, 450mW into 8Ω Transducer:  
84% (typ)  
The LM4666 features a low-power consumption  
shutdown mode. Shutdown may be enabled by  
driving the Shutdown pin to a logic low (GND).  
Efficiency at 5V, 1W into 8Ω Transducer: 85%  
(typ)  
The LM4666 has fixed selectable gain of either 6dB  
or 12dB. The LM4666 has short circuit protection  
against a short from the outputs to VDD or GND.  
Total Quiescent Power Supply Current: 7.0mA  
(typ)  
Total Shutdown Power Supply Current: 0.02µA  
(typ)  
Single supply range: 2.8V to 5.5V  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2004–2013, Texas Instruments Incorporated  
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