High sensitivity magnetic sensors compatible with bulk silicon and SOI IC technology

Abstract

This paper presents state of the art split drain current magnetic sensors fully compatible with the bulk silicon and SOI technology. While lateral double-diffused magnetic sensitive MOSFET with integrated n-type Hall plate exhibits an order of magnitude higher relative current magnetic sensitivity compering with the conventional split drain silicon MagFETs, novel dual-gate four-terminal magnetic sensor brings a step-change in the integrated magnetic sensor's performance. Finally, a potential of GaN split current magnetic sensitive HEMT has been discussed.