CMOS Implementation of Multipath Fully Differential OTA with Dual Flipped Voltage Follower in 50 nm and 75 nm CMOS Technologies using Cadence Tool

The article presents the CMOS implementation of a multipath differential operational transconductance amplifier (OTA) with two flipped voltage followers (FVF). OTAs are analog amplifiers used in integrated circuits for signal processing applications, converting input voltage signals into output current signals. The design aims to enhance performance metrics such as gain and bandwidth to meet the demands of modern analog and mixed-signal applications. The Methods Used - The design incorporates two Flipped Voltage Followers (FVF) cells as variable current sources, enabling both class A-B operation and adaptive biasing for other types of driver units. The structures include multiple input-to-output paths serving as dynamic current boosters during slewing rate phases, enhancing slewing rate performance. The proposed method uses a two-stage flipped voltage follower with a multipath fully differential OTA, developed using 1.4V CMOS technology for 50nm and 1.6V CMOS technology for 75nm, implemented in Tanner EDA tool. Results Achieved - The amplifier's performance is analyzed in terms of gain and bandwidth. The study showcases improvements in transconductance and operational characteristics, offering a promising avenue for the development of assistive devices. The findings contribute to ongoing efforts to create inclusive and accessible technological solutions for individuals facing challenges in visual navigation. Concluding Remarks - The implementation of the multipath differential OTA with two flipped voltage followers demonstrates significant advancements in analog circuit design, particularly in improving gain, bandwidth, and operational characteristics. These improvements have promising implications for the development of assistive technologies, specifically in enhancing mobility for individuals with visual impairments. Findings - The presents the design and performance evaluation of a multipath fully differential operational transconductance amplifier (OTA) with a dual flipped voltage follower (DFF) implemented in both 50 nm and 75 nm CMOS technologies. The findings indicate that the OTA with DFF achieves improved performance metrics such as gain, bandwidth, and power efficiency compared to conventional designs. Additionally, the paper highlights the effectiveness of Cadence tools for designing and simulating the circuit in both technology nodes. The results demonstrate the feasibility and potential advantages of using advanced CMOS technologies for implementing high-performance analog circuits. Some possible novelties in the usage of 50nm & 75nm in this paper includes the following - circuit architecture, introduces a novel circuit architecture for the OTA and DFF that improves performance metrics such as gain, bandwidth, and power efficiency compared to existing designs in the form of technology scaling's for optimal performance and functionality with CAD tool utilizations.