一种混合信号型时分复用上电复位及模拟音量控制电路
发布时间：2018-09-10 08:43
【摘要】：为了满足助听器SoC高精度、低功耗应用,提出一种基于8位逐次逼近模数转换器的混合信号型时分复用上电复位及模拟音量控制电路。该电路利用逐次逼近模数转换器输出结束标志信号作为时分信号,对电池电压和模拟音量电压进行交替检测。数字逻辑电路可实现对上电、欠压阈值以及延迟时间的灵活配置,同时也可进行信号处理以及产生上电复位和欠压报警信号。电路采用SMIC 130nm 1P8M混合信号工艺实现。测试结果表明,在供电电压1V时,电路能够完成高精度的上电复位、欠压报警和模拟音量检测功能;输入120 Hz正弦信号和15kHz时钟频率时,逐次逼近模数转换器输出信号最大信噪失真比为46.5dB,功耗仅有86μW。
[Abstract]:In order to meet the high precision and low power consumption of hearing aid SoC, a hybrid signal time division multiplexing (TDM) power reset and analog volume control circuit based on 8-bit successive approximation ADC is proposed. The circuit uses successive approximation A / D converter output signal as time division signal to detect battery voltage and analog volume voltage alternately. The digital logic circuit can realize the flexible configuration of power up, undervoltage threshold and delay time, at the same time, it can also process signals and generate reset and undervoltage alarm signals. The circuit is realized by SMIC 130nm 1P8M mixed signal technology. The test results show that when the supply voltage is 1 V, the circuit can perform the functions of high precision reset, undervoltage alarm and analog volume detection, and when the sinusoidal signal of 120 Hz and the clock frequency of 15kHz are input, The maximum signal-to-noise distortion ratio of the output signal is 46.5 dB, and the power consumption is only 86 渭 W.
【作者单位】： 厦门理工学院光电与通信工程学院;中国科学院微电子研究所;
【基金】：国家自然科学基金资助项目(61704143) 福建省中青年教师教育科研项目(JAT170428)
【分类号】：TN402
[Abstract]:In order to meet the high precision and low power consumption of hearing aid SoC, a hybrid signal time division multiplexing (TDM) power reset and analog volume control circuit based on 8-bit successive approximation ADC is proposed. The circuit uses successive approximation A / D converter output signal as time division signal to detect battery voltage and analog volume voltage alternately. The digital logic circuit can realize the flexible configuration of power up, undervoltage threshold and delay time, at the same time, it can also process signals and generate reset and undervoltage alarm signals. The circuit is realized by SMIC 130nm 1P8M mixed signal technology. The test results show that when the supply voltage is 1 V, the circuit can perform the functions of high precision reset, undervoltage alarm and analog volume detection, and when the sinusoidal signal of 120 Hz and the clock frequency of 15kHz are input, The maximum signal-to-noise distortion ratio of the output signal is 46.5 dB, and the power consumption is only 86 渭 W.
【作者单位】： 厦门理工学院光电与通信工程学院;中国科学院微电子研究所;
【基金】：国家自然科学基金资助项目(61704143) 福建省中青年教师教育科研项目(JAT170428)
【分类号】：TN402
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