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The RT9120H is a high efficiency, I<sup>2</sup>S-input, stereo channel audio power amplifier delivering maximum 2x50W into 8Ω BTL (Bridge Tied Load) speaker loads. It can deliver over 94% power efficiency at 2x10W and eliminate the need for heatsink and implement CMH mode to reduce pulse width at small signal, inductor current ripple is reduced and hence light load efficiency is improved.The built-in anti-pop functions can reduce the speaker’s pop noise under all kind of scenarios. Built-in protection circuits provide over-temperature, overcurrent, overvoltage, undervoltage protections, and report error status.The RT9120H is a 3-wired device receiving all clocks from external sources with standard I<sup>2</sup>S, Left-justified, Right-justified or TDM (Time-Division Multiplexing) formats. It can support wide input sampling rate from 8kHz to 192kHz.The RT9120H features one band DRC (Dynamic Range Compression) and flexible input mixer, and power clipping.The recommended junction temperature range is -40°C to 150°C, and the ambient temperature range is -40°C to 85°C.
RT9120H Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>CMH Mode for Lower Quiescent Current </li><li>Wide Input Supply Range: 4.5V to 26.4V </li><li>Support 1.8V, 3.3V I/O </li><li>Configurable 4 Different IC Slave Address </li><li>1x100W, PBTL Mode (2Ω, 23V, THD+N = 1%) </li><li>2x50W, BTL Mode (4Ω, 23V, THD+N = 1%) </li><li>SNR up to 113dB </li><li>THD+N is 0.02% at 1W </li><li>35μV Noise Floor </li><li>Efficiency up to 94% at 2x10W for 8Ω </li><li>R<sub>DS(ON)</sub> Low to 90mΩ </li><li>Sampling Frequency from 8kHz to 192kHz </li><li>Support TDM Format for Multi-Channel </li><li>Built-In Anti-Pop Function </li><li>Programmable Coefficients for DRC Filters </li><li>Built-In DC Blocking Filters </li><li>Built-In Thermal Fold Back Control </li><li>Protection Features: UVLO, OVP, OCP, OTP, and DCP </li><li>64 Pin LQFP Package with the Exposed Thermal Pad </li></ul></div>
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RT9120H Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Bluetooth and WiFi Speakers </li><li>Subwoofers </li><li>Bookshelf Stereo Systems </li><li>Professional And Public Address (PA) Speakers </li><li>Active Crossover and Two-Way Speakers </li><li>Soundbars, Notebooks, PC Speakers </li><li>Home Audio </li></ul></div>
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