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Product Spec Banner
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The RT9123 is a mono Class-D amplifier that features high efficiency and performance. In addition to I2C control, the RT9123 also features a "HW Control Mode" selection for the I<sup>2</sup>S/TDM interface. This mode simplifies the amplifier driver, as it does not require I<sup>2</sup>C commands to turn on or off the device. The digital audio interface supports various formats, including I<sup>2</sup>S, left justified, right justified, and 8-channel time division multiplexed (TDM) formats.<br />The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.
RT9123 Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Class-D Speaker AMP <ul class="lv2"> <li></li><li>3.2W Output Power @ 4Ω Load, THD < 10% </li><li>8μV Output Noise </li><li>Low Shutdown Current </li><li>Add DRE to Reduce Output Noise </li><li>Spread Spectrum Frequency </li><li>Fast Turn-On Time: 1ms </li><li>Support HW Control Mode without Driver and I<sup>2</sup>C Controlled </li><li>Silence Data Detection </li><li>Beep Function </li></ul> </li><li>Audio Interface <ul class="lv2"> <li></li><li>Digital Audio Interface Support I<sup>2</sup>S, Left-Justified, Right-Justified, TDM </li><li>Support 8/16/20/24/32 Bit Data Length and 8kHz to 96kHz Sample Rate </li></ul> </li><li>Digital <ul class="lv2"> <li></li><li>Volume Control </li><li>Clipping Reduce Gain Control </li></ul> </li><li>Protection <ul class="lv2"> <li></li><li>OCP: Detects High Current Levels to Disable the Analog Blocks for 100ms </li><li>VDD UVP: Disables the Analog Blocks when the Battery Voltage Falls Below 2.2V </li><li>VDD18 UVP: Disables the Analog Blocks when the Battery Voltage Falls Below 1.4V </li><li>OTP: Disables the Analog Block when the IC Temperature Exceeds 150°C </li></ul> </li></ul></div>
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RT9123 Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Smartphones, Tablets </li><li>Personal Media Players/Portable TVs </li><li>Game Players/Cameras </li></ul></div>
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