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RT9101 是输出功率为 2.65W 的高效D类音讯功率放大器，它集成了低阻抗的功率 MOSFET ，可通过外部输入电阻进行增益设定，无需使用输出滤波器，降低了外部组件数量、PCB 空间占用和系统成本。</br>借助工作在 5V 供电下的能力，RT9101 可以 10% 的 THD+N 指标在 4Ω 的扬声器负载上持续输出平均 2.65W 的功率，如果功率降至 2W ，则 THD+N 指标可以降至 0.5% 。与典型的 AB 类放大器相比，RT9101 在驱动扬声器上表现出更高的效率。当工作在 3.6V 电压下时，用它驱动 8Ω 扬声器输出 400mW 功率的效率可以达到 88%。</br>它非常适合功率敏感的应用，例如移动电话和其它电池供电设备。它还具有快速建立工作状态的能力，这对减小开关机过程中的音讯冲击声意义重大。另外，它还集成了过热保护和过流保护电路。</br>RT9101 可以 WDFN-8L 3x3 和 WL-CSP-9B 1.45x1.45(BSC) 的超小型封装供货。
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<div class="spec-list"><ul class="lv1"><li>宽工作电压范围：2.5V~5.5V </li><li>与 8Ω 扬声器配合高效工作的能力 </li><li>400mW 时效率为88% </li><li>100mW 时效率为80% </li><li>很低的静态电流和停机电流消耗 </li><li>优化的 PWM 输出级，无需使用 LC 滤波器 </li><li>全差分设计降低了射频整流，省却了对旁路电容的需求 </li><li>内部生成 250kHz 开关切换频率 </li><li>集成了音频冲击抑制电路 </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Mobile Phones </li><li>Handsets </li><li>PDAs </li><li>Portable multimedia devices </li></ul></div>
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