Utilization of a cascoded-inverter in an RGC structure as a low-power, broadband TIA. (May 2020)

• Record Type: Journal Article
• Authors: Hosseinisharif, Seyed Ali; Pourahmadi, Majid; Shayesteh, Mohammad Reza
• Is Part Of: Microelectronics journal. Volume 99(2020)
• Publication Date: 2020-05
• Subjects: Regulated cascode -- Cascoded-inverter -- Transimpedance amplifier -- Optical receiver -- Broadband -- Low-power; Microelectronics -- Periodicals; Microélectronique -- Périodiques; Microelectronics; Electronic journals; Journals - contents and abstracts; Periodicals; 621.3805
• DOI: 10.1016/j.mejo.2020.104749
• Languages: English
• ISSNs: 0959-8324

Abstract

Abstract: A low-power circuit structure is reported in this paper as a broadband TIA, in which the DC current and hence the power dissipation is lessened by applying cascoded structure to an inverter as an active-feedback network to a conventional Regulated Cascode (RGC) circuit. The improved RGC structure also benefits from an added active-inductor at the output node, which resonates with the output capacitance and provides extra bandwidth without the requirement of excessive current. Results for the proposed RGC-based TIA, which operates at 10 ​Gb/s, show only 1.6 ​mW power dissipation for obtaining 40 ​dBΩ transimpedance gain, 6.4 ​GHz frequency bandwidth and 25pA/√Hz input referred noise. Analysis indicate that the proposed TIA is suitable to work as a transimpedance amplifier in low-power, broadband optical communication receivers.