Abstract
A super class-AB bulk-driven (BD) operational transconductance amplifier (OTA) with improved slew rate (SR) is presented. The proposed OTA utilises bulk flipped voltage follower for the BD input stage and a nonlinear current mirror for the active load to enhance the SR of conventional BD counterpart. Both the traditional and the proposed OTA, have been simulated on the UMC 180 nm process, and results show that the proposed BD OTA achieves a 350% SR enhancement with only 25% increased power dissipation compared with the conventional one.
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