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LM49150TL
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LM49150TL

  • Category:Audio amplifier
  • Product Name:Mono Class D audio subsystem, with headphone drivers and stereo ground-referenced headphone amplifiers
  • Manufacturers:NSC
  • Production Batch Number:09+
  • Encapsulation:20-MicroSMD
  • Stock Status:There is stock
  • Stock Quantity:6000
  • Minimum order quantity: 1
  • Details:点击查找LM49150TL的pdf资料
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  • Product introduction

peculiarity

  • Ë 2 S级放大器
  • 接地参考耳机输出 - 消除了输出耦合电容
  • I 2 C-amount and mode control
  • 单声道耳机放大器
  • Flexible outputs are speaker and headphone outputs
  • 20焊球micro SMD封装
  • Soft-enable functionality
  • "Click" sound suppression circuit
  • Thermal shutdown protection
  • Low supply current
  • Micropower shutdown

illustrate

LM49150是一个完全集成的蜂窝电话等便携式手持应用而设计的音频子系统。 部分国家的Power Wise ®产品系列，在各种操作模式，LM49150消耗功率非常低，仍然提供卓越的音频性能。 LM49150结合一个1.25W的单Ë 2 S（增强发射抑制）D类放大器，135MW AB类耳机放大器，42mW/channel立体声接地参考耳机放大器，音量控制，以及混合电路到一个单一的设备。

无滤波器D类放大器到 My E 2 S级D类放大器采用拥有专利的超低电磁干扰的PWM架构，可大幅降低RF的排放，同时保持音频质量。 42mW/channel耳机驱动器采用美国国家半导体的接地参考架构，创建了一个从单电源地为参考的输出，省去笨重，昂贵的隔直流电容，节省空间和降低成本。

LM49150具有全差分单声道输入，和两个单端立体声输入。 可以混合使用这三个输入/复用，无论是喇叭或耳机放大器。 每个输入通道都有一个独立的，32步级的数字音量控制。 耳机输出级具有额外的8步增益控制，而扬声器输出阶段有一个可选择6dB或12分贝增益。 Mixer, volume control and device mode selection control, via I 2 C兼容的串行接口。

LM49150的优越的点击和弹出抑制消除power-up/down和关闭时，可听到的瞬态杂音。 LM49150是在一个超小型的20焊球micro SMD封装（2.225毫米X2.644毫米）。

Main specifications

■ In VDD= 5V的输出功率：
Speaker: RL =8Ω的BTL THD + N ≤ 1％ 1.25W (typical)
Earphone: RL =32ΩSE的THD + N ≤ 1％ 42mW (typical)
Receiver: RL =8ΩSE的THD + N ≤ 1％ 135MW (typical)
■ In VDD= 3.3V的输出功率：
Speaker: RL =8Ω的BTL THD + N ≤ 1％ 520mW（典型值）
Earphone: RL =32Ω的BTL THD + N ≤ 1％ 42mW (typical)
Receiver: RL =8ΩSE的THD + N ≤ 1％ 35MW（典型值）
■ 输出偏移
LS模式 9mV（典型值）
HP模式 为1mV（典型值）
听筒 为1mV（典型值）
■ Single-supply operation (VDD） 2.7 to 5.5V
■ I 2 C单电源供电 1.7 to 5.5V


apply

  • mobile phone
  • Pocket PC
  • Portable electronics

andLM49150TLRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
LM49150TL NSC 09+ 20-MicroSMD Mono Class D audio subsystem, with headphone drivers and stereo ground-referenced headphone amplifiers
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