Signalverarbeitungsanordnung für einen Hall-Sensor und Signalverarbeitungsverfahren für einen Hall-Sensor

Details

Veröffentlichungs-Nr.

EP3355475

Aktenzeichen

EP17153931

Anmeldetag

31. Januar 2017

Veröffentlichung

7. September 2022

Erteilung

7. September 2022

Rechtsraum

EP

IPC

H03M1/10G01R33/00// H03M1/12

Abstract

A signal processing arrangement for a Hall sensor comprises a signal path (1), a feedback path (3) and a converter path (5). The signal path (1) comprises a Hall element (11, 12) and a front-end amplifier (16) which are connected in series and arranged to generate an output signal (SOUT) depending on a magnetic field (B). The feedback path (3) comprises a compensation circuit and is coupled to the signal path (1). The converter path (5) comprises an analog-to-digital converter (51) and an offset compensation circuit and is coupled to the signal path (1). A switch network (21, 22, 23, 24) is coupled between the signal path (1), the feedback path (3) and the converter path (5). In a compensation phase (¦COMP), the switch network (21, 22, 23, 24) electrically connects the feedback path (3) to the signal path (1) such that the compensation circuit generates a compensation signal (SCOR) which is coupled into the signal path (1). In a sampling phase (¦SAMP), the switch network (21, 22, 23, 24) connects the signal path (1) to the converter path (5) such that the output signal (SOUT) is reduced by the compensation signal (SCOR) is provided at the converter path (5).

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Firmen

ams AG
AMS AG

Land

🇦🇹 Österreich

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