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RTQ9126 是一款超低输出噪声、高效率、双通道 D 类音频功率放大器。在车载应用中，它可于 14.4V 供电电压下，以 10% THD+N 向 4Ω 负载提供 2x45W 输出。它可在高达 2.1MHz 的输出开关频率下达到超过 87% 的功率效率，以提供清晰音质，并可在极小 PCB 尺寸中实现成本优化解决方案。此外，RTQ9126 可设置于 AM 频段以上，以消除 AM 频段干扰并降低输出滤波器尺寸与成本；亦可设置于 AM 频段以下，以优化效率。RTQ9126 可通过 I<SUP>2</SUP>C 总线接口完整设置，并具备专为车载应用设计的完整诊断阵列。内置防爆音功能可在各种情境下降低扬声器的爆音噪声。其内置保护电路可提供热折返、过温、过电流、过压与欠压保护，并回报错误状态。RTQ9126 是一款 3 线式器件，可使用标准 I<SUP>2</SUP>S 与 TDM (Time-Division Multiplexing) 格式，从外部来源接收所有时钟。它支持 32kHz 至 96kHz 的宽输入采样率范围。此器件提供 64-pin RLQFP 封装，且外露散热焊盘朝上。建议结温范围为 -40°C 至 150°C，环境温度范围为 -40°C 至 125°C。
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<div class="spec-list"><ul class="lv1"><li>AEC-Q100 Grade 1 Qualified </li><li>I<sup>2</sup>S and TDM Input </li><li>2x22W, THD + N = 1%, 4Ω, 14.4V </li><li>2x27W, THD + N = 10%, 4Ω, 14.4V </li><li>2x45W, THD + N = 10%, 2Ω, 14.4V </li><li>THD + N is 0.03% </li><li>SNR up to 115dB </li><li>Ultra-Low Quiescent Current Mode </li><li>Ultra-Low Noise = 18μV </li><li>Low R<sup>DS_ON</sup> (80mΩ) </li><li>Switching Frequency up to 2.1MHz </li><li>Sampling Frequency from 32kHz to 96kHz </li><li>I<sup>2</sup>C Control with 16 Address Options </li><li>Built-In Anti-Pop Function </li><li>Built-In Thermal Fold-Back and Clip Detection </li><li>Load Diagnostics <ul class="lv2"> <li></li><li>Output Open Load and Short Load </li><li>Output Short to Power or Ground </li><li>DC and AC Coupled Load Detection </li></ul> </li><li>Protection Features <ul class="lv2"> <li></li><li>Output Short-Circuit </li><li>Overvoltage and Undervoltage </li><li>Output Current Limit and Protection </li><li>Over-Temperature </li><li>DC Offset Detection </li><li>40V Load Dump </li></ul> </li><li>Ambient Temperature Range:-40°C to 125°C </li><li>Junction Temperature Range:-40°C to 150°C </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Automotive Head Units </li><li>In-Vehicle Infotainment </li><li>Automotive External Amplifier Modules </li></ul></div>
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