AEU - International Journal of Electronics and Communications ( IF 3.0 ) Pub Date : 2021-01-05 , DOI: 10.1016/j.aeue.2020.153581 Yongqing Wang , Qisheng Zhang , Xiao Zhao , Liyuan Dong
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 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:
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,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。