低 EMI无滤波具有自动恢复功能2.8W单声道D类音频放大器Low EMI, 2.8-W Mono Filterless Class-D Audio Power Amplifier with Auto-Recovery CXAR41168可持续输出2.8W并具有10%的THD+N及2.2W并具有1%的THD+N。与传统的AB类放大器相比，CXAR41168具有更高的效率

   产品概述 返回TOPla3嘉泰姆

     ，CXAR41168可持续输出2.8W并具有10%的THD+N及2.2W并具有1%的THD+N。与传统的AB类放大器相比，CXAR41168具有更高的效率。在工作电压为3.6V时，驱动8Ω扬声器输出400mW效率可达84%。CXAR41168可用于移动电话，耳机，对讲电话和门铃。CXAR41168具有外部可调整的增益，可调节各输入信号的增益，并将各输入信号进行叠加放大。The CXAR41168 is a high efficiency, 2.8W mono class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, system cost, and simplifying design. Operating in a single 5V supply, CXAR41168 is capable of driving 4Ω speaker load at a continuous average output of 2.8W/10% THD+N or 2.2W/1% THD+N. The CXAR41168 has high efficiency with speaker load compared to a typical class AB amplifier. With a 3.6V supply driving an 8Ω speaker , the efficiency for a 400mW power level is 84%. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the CXAR41168. The gain of CXAR41168is externally configurable which allows independent gain control from multiple sources by summing signals from separate sources.

   产品特点 返回TOPla3嘉泰姆

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●独特的调制方式减少EMI干扰la3嘉泰姆

●短路自动恢复</p>

●工作电压3.6V，负载8Ω，输出功率400mW效率可达84%la3嘉泰姆

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●Shutdown 引脚兼容1.8V 逻辑GPIOla3嘉泰姆

●PWM输出级无需滤波器</p>

●-68dB PSRR 无需电源稳压器</p>

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●内部固定250K开关频率</p>

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Unique Modulation Scheme Reduces EMI Emissionsla3嘉泰姆

Short Circuit Auto-Recoveryla3嘉泰姆

Efficiency at 3.6V With an 8-
Speaker:la3嘉泰姆

− 84% at 400 mWla3嘉泰姆

Low Quiescent Current andla3嘉泰姆

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2.5V to 5.5V Wide Supply Voltagela3嘉泰姆

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Available in SOP-8 Packagela3嘉泰姆

RoHS compliant and 100% Lead(Pb)-Freela3嘉泰姆

Halogen-Freela3嘉泰姆

   应用范围 返回TOPla3嘉泰姆

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●无线移动电话和PDA 
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Ideal for Wireless or cellular Handsets and PDAsla3嘉泰姆

   技术规格书（产品PDF) 返回TOP la3嘉泰姆

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