Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers

Maximilian Scherzer, Mario Auer, Aris Valvanoglou, Stefan Leitner, Werner Magnes

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

Abstract

To date nearly all sensor-front-end implementations for spaceborne fluxgate magnetometers are discrete. In order to assure a lightweight and power efficient design it is therefore crucial to integrate the essential components on a single chip. This work describes the design of highly integrated sensor- front-end elements for spaceborne fluxgate magnetometers. The design of a current-source required for the linearization of the fluxgate magnetometer via current feedback is shown. It uses a Howland current-source to realize a current-controlled current- source (CCCS) on chip. Harsh environmental conditions mandate the use of system monitoring and temperature calibration. The analog-to-digital converter (ADC) used for monitoring environ- mental conditions is implemented as a 2nd-order discrete-time delta-sigma (∆Σ) modulator. This interface circuit was realized in a 180 nm CMOS technology using an active area of less than 1 mm2 . To evaluate the system performance a verification method is proposed based on a microcontroller unit (MCU) that drives a highly linear chopped 1-bit digital-to-analog converter (DAC).
Index Terms—CCCS, Fluxgate Magnetometer, ADC, DAC
Originalspracheenglisch
Titel15th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)
Seiten181-184
DOIs
PublikationsstatusVeröffentlicht - 2019
Veranstaltung15th Conference on PhD Research in Microelectronics and Electronics - EPFL, Lausanne, Schweiz
Dauer: 15 Jul 201918 Jul 2019

Konferenz

Konferenz15th Conference on PhD Research in Microelectronics and Electronics
KurztitelPRIME 2019
LandSchweiz
OrtLausanne
Zeitraum15/07/1918/07/19

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  • Dieses zitieren

    Scherzer, M., Auer, M., Valvanoglou, A., Leitner, S., & Magnes, W. (2019). Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers. in 15th Conference on Ph.D Research in Microelectronics and Electronics (PRIME) (S. 181-184) https://doi.org/10.1109/PRIME.2019.8787744