Abstract
In this paper, we design novel three stage operational amplifiers (3SOA). The proposed 3SOAs uses 45 nm technology node carbon nanotube field effect transistors (CNTFET) as well as the conventional MOSFETs. The proposed structures are hybrid in nature, as they use conventional MOSFETS as well as CNTFETs. The simulation study has shown that a significant improvement in DC gain, output resistance and power consumption in the proposed hybrid devices in comparison to the conventional devices. It has been observed that by varying the number of CNTs, the performance of the proposed 3SOAs can be optimized further. (C) 2016 Elsevier Ltd. All rights reserved.