可调增益3W立体声D类音频功放

CP2212是一款针对便携式电子产品而设计的高效率、无需滤波器的立体声D类音频功率放大器。在5V电源供电，输出信号的THD小于10%的条件下，能够向4Ω负载提供3W/CH的连续功率。工作电压范围从2.5V到5.5V。\n CP2212具有高达90%的效率；在217Hz时PSRR为-80dB；提供纤小的CSP16和QFN20封装，并且仅需要极少的外部器件，有助于节省PCB面积；内置pop＆click杂音抑制电路，极低的关断电流。以上特点使CP2212非常适用于便携式电子产品。\n CP2212的左右声道具有独立的关断控制，并且可以通过增益选择引脚G0和G1把CP221 -独特的PWM调制技术，无需使用输出滤波器\r\n- 8Ω负载，输出功率400mW条件下的效率：90%\r\n- 在5.0V电源电压，1%THD，8Ω负载条件下的输出功率：1.36W/CH\r\n- 在5.0V电源电压，10%THD，4Ω负载条件下的输出功率：3W/CH\r\n- 电源电压范围：2.5V到5.5V\r\n- 左右声道独立的关断控制\r\n- 增益可选：6dB、12dB、18dB和24dB\r\n- 静态功耗：4.5mA\r\n- 关断电流：0.1μA\r\n- 217Hz时的PSRR：-80dB\r\n- 内置300kHz振荡器\r\n- 全差分设计抑制;

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