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The RTQ9124T-QA is an ultra-low output noise, high-efficiency, mono channel class-D audio power amplifier. It can achieve over 85.5% power efficiency, with an output switching frequency of up to 2.1MHz, enabling a cost-optimized solution in a very small PCB size. The switching frequency can be set either above the AM band, which eliminates AM-band interference and reduces output filter size and cost, or below the AM band to optimize efficiency.The RTQ9124T-QA is fully configurable through the I<sup>2</sup>C bus interface and includes a comprehensive diagnostics array specifically designed for automotive applications. The built-in anti-pop functions reduce speaker pop noise under all scenarios. Additionally, the built-in protection circuits provide thermal fold-back, over-temperature, overcurrent, overvoltage, and undervoltage protection, and report error status. The RTQ9124T-QA is a 3-wire device that receives all clocks from external sources using standard I<sup>2</sup>S and TDM (Time-Division Multiplexing) formats. It supports a wide input sampling rate from 8kHz to 192kHz. The RTQ9124T-QA is intended for various automotive audio applications, including telematics and e-call systems. The RTQ9124T-QA is available in a TSSOP-28 (Exposed Pad) package. The recommended junction temperature range is -40&deg;C to 150&deg;C, and the ambient temperature range is -40&deg;C to 125&deg;C.
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  • AEC-Q100 Qualified
  • I2S and TDM Input (Up to 16CH TDM)
  • 1x27W, THD+N = 10%, 4Ω, 14.4V
  • THD+N is 0.05%
  • SNR up to 115dB
  • Ultra-Low Noise = 18μV
  • Switching Frequency up to 2.1MHz
  • Sampling Frequency from 8kHz to 192kHz
  • I2C Control with 4 Address Options
  • Built-In Anti-Pop Function
  • Built-In Thermal Fold-Back and Clip Detection
  • Ultra-Low Quiescent Mode (ULQM)
  • AC-DC Load Diagnostics
  • Real Time Load Diagnostics
  • Temperature and Voltage Sensing via I2C
  • Protection Features
    ► Output Short-Circuit
    ► Overvoltage and Undervoltage
    ► Overcurrent Warning
    ► Overcurrent
    ► Over-Temperature
    ► DC Detection
    ► 40V Load Dump
  • Ambient Temperature Range: -40°C to 125°C
  • Junction Temperature Range: -40°C to 150°C
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e-Call Systems<br />Telematics<br />AVAS
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Keyword 1

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