Title :
Towards circuit design using VeSFETs
Author :
Pastre, Marc ; Krummenacher, François ; Barbut, Lucian ; Sallese, Jean-Michel ; Kayal, Maher
Author_Institution :
EPFL STI, Swiss Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
This paper explores the potential of VeFETs for mixed-signal circuits. A new physics-based compact DC model of the VeSFET operated in subthreshold region is presented and used to derive 1st-order sensitivities of the device threshold voltage to process variations. The VeSFET is compared to the MOSFET transistor, and its advantages and limitations are discussed. Using a Sea-of-Gates-like structure, layout strategies for area-efficient implementation of digital and analog functions are proposed. Finally, the implementation of a mixed-signal circuit (an OTA with chopper modulation) is presented to demonstrate the area-efficiency of circuit implemented with Sea-of-Gates VeSFETs.
Keywords :
choppers (circuits); field effect transistors; mixed analogue-digital integrated circuits; operational amplifiers; semiconductor device models; OTA; VeFET; VeSFET; chopper modulation; circuit design; layout strategies; mixed-signal circuits; physics-based compact DC model; sea-of-gates-like structure; subthreshold region; Geometry; Layout; Logic gates; Niobium; Sensitivity; Threshold voltage; Transistors; OTA; VeSFETs; analog; chopper; circuit; compact model; digital; mixed-signal; sea-of-gates; subthreshold regime;
Conference_Titel :
Mixed Design of Integrated Circuits and Systems (MIXDES), 2011 Proceedings of the 18th International Conference
Conference_Location :
Gliwice
Print_ISBN :
978-1-4577-0304-1
