[paper] EKV Model for Bulk-Driven Circuit Design Using gmb/ID Method

Lukas Nagy, Daniel Arbet, Martin Kovac, Miroslav Potocny, Robert Ondica and Viera Stopjakova

EKV Model for Bulk-Driven Circuit Design Using g_mb/I_D Method

IEEE AFRICON; 13-15 September 2021; Arusha (TZ)

 
Institute of Electronics and Photonics; Faculty of Electrical Engineering and Information Technology; Slovak University of Technology; Bratislava (SK)

Abstract: The paper addresses a development and application of EKV MOS transistor compact model with focus on the ultra low-voltage / ultra low-power analog integrated circuit (IC) design employing bulk-driven (BD) technique. The presented contribution can be viewed as an extension of standard EKV model application and as a contribution to ultra low-voltage IC design techniques. The paper compares the measured and extracted small-signal parameters of standalone transistor samples fabricated in 130 nm CMOS technology and the simulation results obtained using the proposed bulk-driven EKV v2.63 model and foundry-provided BSIM model v3.3. The transistor samples were analyzed with power supply of VDD = 0.4 V The paper also discusses the implementation of 3D graphs as a result of introducing another degree of freedom into the essential MOS transistor characteristics, while maintaining the ease of using the design hand-calculation with the original gm/ID approach.

Fig: Bulk-Driven TEF vs Inversion Coefficient – g_mb/I_D

Acknowledgment: This work has been supported in part by the Slovak Research and Development Agency under grant APVV 19-0392, the Ministry of Education, Science, Research and Sport of the Slovak Republic under grants VEGA 1/0731/20 and VEGA 1/0760/21, and ECSEL JU under project PROGRESSUS (Agr. No. 876868)