单声道数字功放芯片-NTP8835特性

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工采网代理的韩国NF－数字功放芯片系列二合一均可用作单声道和双声道，采用了独特的闭环增益反馈补偿技术，它的音频指标达到AB类的标准， 在低频方面取得更好的特性 ． 它采用桥接方式，可以推动4或8欧姆的扬声器，该放大器效率接近90％ ，具有体积小，效率高，功率大，音质佳，无需额外加装散热器，非常适合作有源音箱改造，电声工程实施，有声产品研发等应用领域。，而且已经内置输入耦合电容，没有任何外围元件，另外，它还有静音控制功能 （逻辑电平控制）， 静音后静态电流低于1mA， 它适合用在PDP电视或液晶电视、多媒体室音箱等。


单声道数字功放芯片－NTP8835是一个单芯片全数字音频包括立体声功率级的放大器放大器系统。集成了多功能数字音频信号处理功能，高性能，高保真全数字PWM调制器和两个大功率全桥MOSFET功率阶段。带防失真功能，超低EMI，无需滤波器，5W高效率的单声道D类音频功放。

独特的防失真功能可以通过检测输出信号的失真，动态调整系统增益，不仅有效防止过载输出对喇叭的损坏，同时带来舒适的听觉感受。实际应用可以通过软件或者硬件设置放大器工作在防失真模式和普通模式，应用非常灵活。可检测并抑制由于输入音乐、语音信号幅度过大所引起的输出信号削顶失真（破音），也能自适应地防止在电池应用中由电源电压下降所造成的输出削顶，显著提高音质，创造非常舒适的音乐享受，并保护扬声器免受过载损坏。

单声道数字功放芯片－NTP8835采用先进的技术，在全带宽范围内极大地降低了EMI干扰，最大限度地减少对其他部件的影响。其输出无需滤波器的PWM调制结构及反馈电阻内置方式减少了外部元件、PCB面积和系统成本。在5V的工作电压时，能够提供5W的输出功率。内置过流保护、过热保护及欠压保护功能，有效地保护芯片在异常工作状况下不被损坏。并且利用扩频技术充分优化全新电路设计，高达90％以上的效率更加适合低电压，高功率输出的音频系统。

韩国NF数字功放芯片具备24Bit，96KHz高品质音频数据处理，支持Hi－Res音频系统，其他品牌功放产品基本只有48K的数据处理能力。

APEQ专利技术，在频段压限时，其他频段还可以独立提升，充分发挥喇叭最大效能使用韩国NF数字功放芯片，APEQ时的优点；与最大音量幅度不相关，能设定最大的低频增益；随着音量增加，即使触发门限值，其他频率段依然可以提升。最大音量输出幅度是0db，当使用APEQ提升100Hz处6DB低频增益后，频部分先打到预设门限，但是APEQ的增益值会随着音量继续上升而下降，此时整个频段依然可以提升音量。
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