In this study, we propose a robust feed-forward control strategy to enhance the transconductance of bulk-driven (BD) operational transconductance amplifiers (OTAs), when working in weak inversion region. With the proposed control method, an enhanced bulk-driven OTA (EBD-OTA) is devised, whose gain bandwidth (GBW) and DC gain are both increased, with $g_{\mathit{mb}}/g_m$ ratio displaying an inverse relation to the degree of CMOS scaling. The devised BD-OTA is fabricated with the SMIC 180 nm process, and experimental results demonstrate an unity 53 kHz GBW with a 0.6 V power supply, which verifies the proposed control approach.

中文翻译：

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增强的批量驱动OTA，具有针对CMOS缩放的高跨导

在这项研究中，我们提出了一种鲁棒的前馈控制策略，以在弱反相区域工作时增强体驱动（BD）运算跨导放大器（OTA）的跨导。利用提出的控制方法，设计了一种增强的批量驱动OTA（EBD-OTA），其增益带宽（GBW）和DC增益都增加了，$G_{\mathit{兆字节}}/G_{米}$比率与CMOS缩放比例成反比。设计的BD-OTA采用SMIC 180 nm工艺制造，实验结果表明，采用0.6 V电源的统一53 kHz GBW，验证了所提出的控制方法。