IEICE Electronics Express | |
A transconductance enhancement technique for bulk-driven OTAs working in weak inversion | |
Xiao Zhao1  Shuangshuang Cheng1  Qisheng Zhang1  | |
[1] School of Geophysics and Information Technology, China University of Geosciences (Beijing) | |
关键词: transconductance enhancement; bulk-driven; weak inversion; positive feedback differential pair; OTA; | |
DOI : 10.1587/elex.13.20160475 | |
学科分类:电子、光学、磁材料 | |
来源: Denshi Jouhou Tsuushin Gakkai | |
【 摘 要 】
References(10)A proposed transconductance enhancement technique for bulk-driven OTAs working in weak inversion is presented in this paper. The basic idea is to use a bulk-driven input differential pair employing the auxiliary amplifier and positive feedback technique to enhance transconductance, which improves the enhancement ratio of transconductance from (n + 1)/(n �? 1) to (n + 2)/(n �? 1). The proposed amplifier based on the mentioned technique is simulated on UMC 180 nm process with the help of Spectre. The simulation results demonstrate that the transconductance of the bulk-driven OTAs working in weak inversion improves almost 50% with just a little increased power consumption compared to the conventional counterparts.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201911300263364ZK.pdf | 855KB | download |