Designing a Multipath Fully Differential Operational Transconductance Amplifier (OTA) with Dual Flipped Voltage Follower in 50nm and 75nm CMOS Technologies using Cadence Tool

The article discusses the CMOS implementation of a multipath differential OTA with two flipped voltage followers, focusing on enhancing gain, bandwidth, and addressing the needs of modern analog and mixed-signal applications. By utilizing two flipped voltage followers as variable current sources, the design enables class A-B operation and adaptive biasing for various driver units. The structure includes multiple input-to-output paths as dynamic current boosters, enhancing slewing rate performance. The study evaluates the amplifier's performance in terms of gain and bandwidth, implementing the proposed method using 50nm and 75nm CMOS technologies, and developing the work in the Tanner EDA tool. Additionally, the research explores advancements in assistive technology for individuals with visual impairments, proposing a CMOS implementation of a multiple-path full-differential OTA with two flip-type voltage level followers (FVF) cells. The effectiveness of this design is investigated in both 75nm and 50nm CMOS technologies, showcasing improvements in transconductance and operational characteristics. These results offer a promising direction for the development of assistive devices, contributing to efforts to create inclusive and accessible technological solutions for individuals facing challenges in visual navigation.