An active inductor employing a new four terminal floating nullor transconductance amplifier (FTFNTA). Issue 5 (3rd May 2020)

• Record Type: Journal Article
• Authors: Tarunkumar, Huirem; Shantikumar Singh, Yumnam; Ranjan, Ashish
• Is Part Of: International journal of electronics. Volume 107:Issue 5(2020)
• Page Start: 683
• Page End: 702
• Publication Date: 2020-05-03
• Subjects: Four-terminal floating nullor transconductance amplifier (FTFNTA) -- current feedback operational amplifier (CFOA/AD844) -- operational transconductance amplifier (OTA/CA3080) -- active inductor -- active filter; Electronics -- Periodicals; Electronic control -- Periodicals; 621.381
• DOI: 10.1080/00207217.2019.1672807
• Languages: English
• ISSNs: 0020-7217

Abstract

ABSTRACT: In this scientific study, a new analog active building block named as four terminal floating nullor transconductance amplifier (FTFNTA) is implemented. The FTFNTA design offers a combined essence of both traditional four terminal floating nullor (FTFN) and an operational transconductance amplifier (OTA). The FTFNTA design is extended for the design of a lossless floating and grounded inductor simulator with few passive components. In addition, the performance and usefulness of the proposed inductor topology are also expanded for active filter applications: higher-order Butterworth high-pass filter and current mode multifunction filter. The functionality of the CMOS-based FTFNTA is integrated with a 0.18 µm Taiwan Semiconductor Manufacturing Company (TSMC) CMOS technology. Moreover, the FTFNTA is also realised using the current feedback operational amplifier (CFOA/AD844) and OTA (OTA/CA3080) of a commercially available IC to test the viability of the proposed inductor design. Finally, an application based on the inductor topology and its impedance characteristics are well analysed via PSPICE simulation.