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A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier

机译:用于光隔离放大器的宽带高分辨率发射器

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A wide-band and high-resolution transmitter of optical isolation amplifier is proposed for switching power supply isolation and servo motor drive applications. The transmitter is based on the chopper-stabilized technique and sigma delta modulator. A built-in common-mode voltage circuit of switched capacitor is proposed to ensure the stability of input DC common mode. Meanwhile, the feedback capacitor is used to improve the driving ability, which helps to avoid a buffer with large input swing. The circuit is tapeout with GF CMOS 0.18 mu m 1P6M process with 5 V power supply. The test results show that in 5 V supply voltage, the input swing of transmitter is 2 V and the effective signal bandwidth is 110 kHz. And the output resolution achieves 11 bit.
机译:提出了一种用于开关电源隔离和伺服电机驱动应用的光隔离放大器的宽带和高分辨率发射器。 变送器基于斩波稳定技术和Sigma Delta调制器。 提出了一种开关电容的内置共模电压电路,以确保输入直流共模的稳定性。 同时,反馈电容用于提高驱动能力,这有助于避免具有大输入摆动的缓冲器。 电路采用GF CMOS 0.18 MU M 1P6M工艺带传纸,具有5 V电源。 测试结果表明,在5 V电源电压中,发射器的输入摆动是2 V,有效信号带宽为110 kHz。 并且输出分辨率达到11位。

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  • 来源
    《Journal of electrical and computer engineering》 |2020年第1期|3626401.1-3626401.8|共8页
  • 作者单位

    Xiamen Univ Technol Sch Optoelect & Commun Engn Xiamen 361024 Peoples R China;

    Xiamen Univ Technol Sch Optoelect & Commun Engn Xiamen 361024 Peoples R China;

    Xiamen Univ Technol Sch Optoelect & Commun Engn Xiamen 361024 Peoples R China;

    Xiamen Univ Technol Sch Optoelect & Commun Engn Xiamen 361024 Peoples R China;

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