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LM4840MHX PDF预览

LM4840MHX

更新时间： 2024-09-17 21:16:51
品牌 Logo 应用领域
德州仪器 - TI 光电二极管商用集成电路
页数 文件大小 规格书
22页 829K
描述
2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28, TSSOP-28

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LM4840MHX 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：TSSOP, TSSOP28,.25Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.82信道分离：65 dB
商用集成电路类型：VOLUME CONTROL CIRCUITJESD-30 代码：R-PDSO-G28
JESD-609代码：e0长度：9.7 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：28
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：TSSOP28,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：5 V认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Audio/Video Amplifiers
最大压摆率：30 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn85Pb15)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：4.4 mmBase Number Matches：1

LM4840MHX 数据手册

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December 2001  
LM4840  
Stereo 2W Audio Power Amplifiers  
with Digital Volume Control and Input Mux  
General Description  
Key Specifications  
n PO at 1% THD+N  
The LM4840 is a monolithic integrated circuit that provides  
digital volume control and stereo bridged audio power am-  
plifiers capable of producing 2W into 4Ω (Note 1) with less  
than 1.0% THD or 2.2W into 3Ω (Note 2) with less than 1.0%  
THD.  
n
n
n
into 3Ω (LM4840LQ, LM4840MH)  
into 4Ω (LM4840LQ, LM4840MH)  
into 8Ω (LM4840)  
2.2W (typ)  
2.0W (typ)  
1.1W (typ)  
n Single-ended mode - THD+N at 85mW into 32Ω  
1.0%  
Boomer® audio integrated circuits were designed specifically  
to provide high quality audio while requiring a minimum  
amount of external components. The LM4840 incorporates a  
digital volume control, stereo bridged audio power amplifiers,  
an input mux, and a last volume level memory function to  
save the volume setting during shutdown. These features  
make it optimally suited for multimedia monitors, portable  
radios, desktop, and portable computer applications.  
(typ)  
n Shutdown current  
0.2µA (typ)  
Features  
n PC98 and PC99 Compliant  
n Digital Volume Control Interface  
n System Beep Detect  
n Stereo switchable bridged/single-ended power amplifiers  
n “Click and pop” suppression circuitry  
n Thermal shutdown protection circuitry  
n Input Mux  
n Capless headphone drivers  
n Last volume memory from shutdown  
The LM4840 features an externally controlled, low-power  
consumption shutdown mode, and both a power amplifier  
and headphone mute for maximum system flexibility and  
performance.  
Note 1: When properly mounted to the circuit board, the LM4840LQ and  
LM4840MH will deliver 2W into 4Ω. The LM4840MT will deliver 1.1W into 8Ω.  
See the Application Information section LM4840LQ and for LM4840MH us-  
age information.  
Note 2: An LM4840LQ and LM4840MH that have been properly mounted to  
the circuit board and forced-air cooled will deliver 2.2W into 3Ω.  
Applications  
n Portable and Desktop Computers  
n Multimedia Monitors  
n Portable Radios, PDAs, and Portable TVs  
Connection Diagram  
LLP Package  
DS200104-35  
Top View  
Order Number LM4840LQ  
See NS Package Number LQA028A for Exposed-DAP LLP  
Boomer® is a registered trademark of NationalSemiconductor Corporation.  
© 2001 National Semiconductor Corporation  
DS200104  
www.national.com  
1234567...22

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 		Low EMI, Filterless, 2.3W Stereo Class D Audio Power Amplifier with National 3D Enhancemen
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