A High Precision Digitally-Controlled Current Source for Magnetic-Field Measurements in Space

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

Abstract

For spaceborne sensors power-efficient and lightweight circuitry is required, therefore, integrated solutions are preferred. In this paper an integrated current source is presented that can be used in the front-end of a fluxgate- magnetometer. A “radiation aware” design paradigm was followed to account for parameter shifts due to ionizing radiation and allow for radiation hardening without changing the topology.
The digital current source achieves a dynamic range of more than 19 bits. It is based on a Delta-Sigma modulator with a digital pulse-width modulator as a quantizer. The digital-to- analog conversion is performed using a current-steering cell that employs chopping to minimize flicker noise. A fully-differential amplifier is used to drive an improved Howland current source.
Index Terms—current source, precision, radiation hardness, Delta-Sigma
Originalspracheenglisch
TitelProceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems
PublikationsstatusEingereicht - 2019
Veranstaltung62nd IEEE International Midwest Symposium on Circuits and Systems
- Dallas, USA / Vereinigte Staaten
Dauer: 4 Aug 20197 Aug 2019

Konferenz

Konferenz62nd IEEE International Midwest Symposium on Circuits and Systems
KurztitelMWSCAS
LandUSA / Vereinigte Staaten
OrtDallas
Zeitraum4/08/197/08/19

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Magnetic field measurement
Modulators
Radiation hardening
Differential amplifiers
Radiation
Ionizing radiation
Magnetometers
Digital to analog conversion
Hardness
Topology
Sensors

Dies zitieren

Auer, M., & Scherzer, M. (2019). A High Precision Digitally-Controlled Current Source for Magnetic-Field Measurements in Space. Manuskript zur Veröffentlichung eingereicht. in Proceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems

A High Precision Digitally-Controlled Current Source for Magnetic-Field Measurements in Space. / Auer, Mario; Scherzer, Maximilian.

Proceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems. 2019.

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

Auer, M & Scherzer, M 2019, A High Precision Digitally-Controlled Current Source for Magnetic-Field Measurements in Space. in Proceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems., Dallas, USA / Vereinigte Staaten, 4/08/19.
Auer M, Scherzer M. A High Precision Digitally-Controlled Current Source for Magnetic-Field Measurements in Space. in Proceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems. 2019
Auer, Mario ; Scherzer, Maximilian. / A High Precision Digitally-Controlled Current Source for Magnetic-Field Measurements in Space. Proceedings of the 62nd IEEE International Midwest Symposium on Circuits and Systems. 2019.
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