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Product Spec Banner
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RTQ9128DL-QA 是一款超低輸出雜訊、高效率、四通道 D 類音訊功率放大器。在車用應用中，它可於 14.4V 供應電壓下，以 10% THD+N 向 4Ω 負載提供 4x27W 輸出。它可在高達 2.1MHz 的輸出切換頻率下達到超過 87% 的功率效率，以提供清晰音質，並可在極小 PCB 尺寸中實現成本最佳化解決方案。此外，RTQ9128DL-QA 可設定於 AM 頻段以上，以消除 AM 頻段干擾並降低輸出濾波器尺寸與成本；亦可設定於 AM 頻段以下，以最佳化效率。RTQ9128DL-QA 可透過 I<SUP>2</SUP>C 匯流排介面完整設定，並具備專為車用應用設計的完整診斷陣列。內建防爆音功能可在各種情境下降低揚聲器的爆音雜訊。其內建保護電路可提供熱折返、過溫、過電流、過壓與欠壓保護，並回報錯誤狀態。RTQ9128DL-QA 是一款 3 線式元件，可使用標準 I<SUP>2</SUP>S 與 TDM (Time-Division Multiplexing) 格式，從外部來源接收所有時脈。它支援 32kHz 至 96kHz 的寬輸入取樣率範圍。此元件提供 64-pin RLQFP 封裝，且外露散熱焊墊朝上。建議接面溫度範圍為 -40°C 至 150°C，環境溫度範圍為 -40°C 至 125°C。
RTQ9128DL-QA 電路圖
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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>4x22W, THD + N = 1%, 4Ω, 14.4V </li><li>4x27W, THD + N = 10%, 4Ω, 14.4V </li><li>4x45W, 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<sub>DS_ON</sub> (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 Ground or Power </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>Overcurrent Warning 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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RTQ9128DL-QA 訂購資訊
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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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