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

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
TitelProceedings of the 15th Conference on Ph.D. Research in Microelectronics and Electronics
PublikationsstatusAngenommen/In Druck - Jul 2019
Veranstaltung15th Conference on Ph.D. Research in Microelectronics and Electronics - Lausanne, Schweiz
Dauer: 15 Jul 201918 Jul 2019

Konferenz

Konferenz15th Conference on Ph.D. Research in Microelectronics and Electronics
LandSchweiz
OrtLausanne
Zeitraum15/07/1918/07/19

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Magnetometers
Digital to analog conversion
Networks (circuits)
Sensors
Monitoring
Microcontrollers
Linearization
Modulators
Calibration
Feedback
Temperature

Dies zitieren

Scherzer, M., & Auer, M. (Angenommen/Im Druck). Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers. in Proceedings of the 15th Conference on Ph.D. Research in Microelectronics and Electronics

Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers. / Scherzer, Maximilian; Auer, Mario.

Proceedings of the 15th Conference on Ph.D. Research in Microelectronics and Electronics. 2019.

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

Scherzer, M & Auer, M 2019, Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers. in Proceedings of the 15th Conference on Ph.D. Research in Microelectronics and Electronics., Lausanne, Schweiz, 15/07/19.
Scherzer M, Auer M. Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers. in Proceedings of the 15th Conference on Ph.D. Research in Microelectronics and Electronics. 2019
Scherzer, Maximilian ; Auer, Mario. / Circuit Design and Verification Method of Integrated Sensor-Front-End Elements for Spaceborne Fluxgate Magnetometers. Proceedings of the 15th Conference on Ph.D. Research in Microelectronics and Electronics. 2019.
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