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The RT5509 is a mono BTL class-D amplifier with cutting-edge speaker protection algorithm. Also, a built-in DC-DC step-up converter is used to provide efficient power for class-D amplifier. I2S interface supports two different audio sources while a pair of auxiliary DATAI/O is used for stereo mode or pass-through application. Chip information including gain, speaker protection output or current sense is able to be monitored via DATAO through proper register setting. Speaker protection provides mechanical / thermal protection with accuracy of 10%/±10ºC of rated limit.
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  • D类声道功率放大器
    ►4.3W输出电源 @ 9.5V, 8Ω Load, THD < 1%
    ►0/3/6/9/12/15/18dB Boost Gain
    ►20μV输出噪音 @ 0dB Gain
  • 升压转换器
    ►适性的升压喇叭，将电池的供电提升到设定电压，最大值可达9.5V
    ►电源模式：适性的升压，固定升压，旁路模式
    ►切换频率 2MHz，最大输出电流 1.5A
    ►支持CCM/DCM补偿，ADC回馈
    ►数字部分：升压模式内的电压回路
  • 数字
    ►支持I2S数字音频接口，左右对齐
    &#9658I2S采样率支持高达48kHz, 24-bit
    ►数字滤波器，数字音量，DRC/噪音门
    ►喇叭保护
    ►喇叭幅度估计精准度：误差 < 10%
    &#9658B1校准功能
    ►温度检测
    ►喇叭温度估算精准度：误差 < ±10°C
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智能型手机 平板计算机
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