A Noise Analysis Based Design Approach of a Fully Differential Voltage Controlled Current Source for Fluxgate Sensor Excitation

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

Fluxgate sensors can be used in a different range of applications, where the magnetic field needs to be measured. They are known for their high dynamic range and outstanding linearity. To drive the sensor a dedicated electronic circuitry is required to retain these excellent qualities. A fully differential voltage controlled current source can be used for the linearization of the fluxgate sensor via excitation of the feedback coil. In this paper a noise analysis was accomplished for an excitation circuit which is based on an Improved Howland Current Source in bridge configuration. Further, a noise improved design approach for a spaceborne fluxgate magnetometer is presented. For this reason a Verilog-A based model of a single ended operational amplifier is employed. Simulation results with Cadence Spectre ® show a signal-to-noise ratio of 119.9 dB, if the presented design flow is used.
Originalspracheenglisch
Titel2019 Austrochip Workshop on Microelectronics (Austrochip)
Seiten10-13
ISBN (elektronisch)978-1-7281-1953-3
DOIs
PublikationsstatusVeröffentlicht - 24 Okt. 2019
Veranstaltung27th Austrian Workshop on Microelectronics: Austrochip 2019 - FH Technikum Wien, Wien, Österreich
Dauer: 24 Okt. 201924 Okt. 2019
Konferenznummer: 27
https://embsys.technikum-wien.at/austrochip2019/
https://embsys.technikum-wien.at/austrochip2019/program/index.htm

Workshop

Workshop27th Austrian Workshop on Microelectronics
KurztitelAustrochip 2019
Land/GebietÖsterreich
OrtWien
Zeitraum24/10/1924/10/19
Internetadresse

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