公开(公告)号：US20180275214A1

公开(公告)日：2018-09-27

申请号：US15989323

申请日：2018-05-25

Applicant: Allegro MicroSystems, LLC

Inventor： David J. Haas ,  Michael Gaboury ,  Alexander Latham

IPC: G01R33/07 ,  G01R15/20 ,  G01R33/00 ,  G01R19/00

CPC classification number: G01R33/072 ,  G01R15/202 ,  G01R19/0092 ,  G01R33/0017 ,  G01R33/0035 ,  G01R33/07 ,  G01R33/075

Abstract: In one aspect, a magnetic field sensor includes a chopper stabilized amplifier and a plurality of Hall-type elements in parallel and connected to the chopper stabilized amplifier. In another aspect, a magnetic field sensor includes a chopper stabilized amplifier and a plurality of Hall quad elements in parallel and connected to the chopper stabilized amplifier. In a further aspect, a current sensor has a bandwidth of 1 MHz and includes a chopper stabilized amplifier and a plurality of Hall quad elements, fabricated in silicon, in parallel and connected to the chopper stabilized amplifier.