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TOPrQD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TOPrQD嘉泰姆

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●独特的调制方式减少EMI干扰rQD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%rQD嘉泰姆

●低静态电流和关断电流rQD嘉泰姆

●工作电压2.5V-5.5VrQD嘉泰姆

●Shutdown 引脚兼容1.8V 逻辑GPIOrQD嘉泰姆

●PWM输出级无需滤波器</p>

●-68dB PSRR 无需电源稳压器</p>

●全差分设计无需RF整形器和旁路电容rQD嘉泰姆

●改进的CMRR无需使用输入端耦合电容rQD嘉泰姆

●内部固定250K开关频率</p>

●内部集成抑制pop和click噪声电路rQD嘉泰姆

●8-pin SOP封装rQD嘉泰姆

●符合RoHS规范及Pb-FreerQD嘉泰姆

Unique Modulation Scheme Reduces EMI EmissionsrQD嘉泰姆

Short Circuit Auto-RecoveryrQD嘉泰姆

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

− 84% at 400 mWrQD嘉泰姆

Low Quiescent Current andrQD嘉泰姆

Shutdown CurrentrQD嘉泰姆

2.5V to 5.5V Wide Supply VoltagerQD嘉泰姆

Shutdown Pin Compatible with 1.8V Logic GPIOrQD嘉泰姆

Optimized PWM Output Stage EliminatesrQD嘉泰姆

LC Output FilterrQD嘉泰姆

Improved PSRR (−68 dB) Eliminates Need for arQD嘉泰姆

Voltage RegulatorrQD嘉泰姆

Fully Differential Design Reduces RF RectificationrQD嘉泰姆

and Eliminates Bypass CapacitorrQD嘉泰姆

Improved CMRR Eliminates Two InputrQD嘉泰姆

Coupling CapacitorsrQD嘉泰姆

Internally Generated 250-kHz SwitchingrQD嘉泰姆

FrequencyrQD嘉泰姆

Integrated Pop and Click Suppression CircuitryrQD嘉泰姆

Available in SOP-8 PackagerQD嘉泰姆

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

Halogen-FreerQD嘉泰姆

   应用范围 返回TOPrQD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 PDAsrQD嘉泰姆

   技术规格书（产品PDF) 返回TOP rQD嘉泰姆

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持</span>！</span>
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