A current-mode back-end for a sensor microsystem

Author

Ajbl, Andrea ; Pastre, Marc ; Kayal, Maher

Author_Institution

Electron. Lab., Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland

fYear

2011

fDate

26-29 June 2011

Firstpage

466

Lastpage

469

Abstract

This paper presents a voltage-to-current converter as a current-mode output buffering stage for sensor interfaces. The converter can be used in any microsystem needing a current output. It is presented here in the context of a Hall sensor microsystem. The system is fully differential with an output stage that converts a discrete input voltage into a continuous current. The Hall sensor microsystem, using the voltage-to-current back-end, has been fabricated and measured in a 0.35 μm CMOS technology. The entire system performs with non-linearity lower than ±0.08% and maximum output current of ±3mA.

Keywords

CMOS integrated circuits; Hall effect; convertors; current-mode circuits; microsensors; CMOS technology; Hall sensor microsystem; current-mode back-end; current-mode output buffering stage; discrete input voltage; sensor interfaces; size 0.35 mum; voltage-current converter; Capacitors; Computer architecture; Current measurement; Linearity; Magnetic field measurement; Resistors; Voltage measurement; Current-mode ouput stage; fully integrated sensor microsystem;

fLanguage

English

Publisher

ieee

Conference_Titel

New Circuits and Systems Conference (NEWCAS), 2011 IEEE 9th International

Conference_Location

Bordeaux

Print_ISBN

978-1-61284-135-9

Type

conf

DOI

10.1109/NEWCAS.2011.5981271

Filename

5981271