Title: Design of a MGy radiation tolerant resolver-to-digital convertor IC for remotely operated maintenance in harsh environments
Authors: Leroux, Paul ×
Van Koeckhoven, Wesley
Verbeeck, Jens
Van Uffelen, Marco
Esqué, Salvador
Ranz, Roberto
Damiani, Carlo
Hamilton, David #
Issue Date: 18-Apr-2014
Publisher: North-Holland
Series Title: Fusion Engineering and Design vol:89 issue:9-10 pages:2314-2319
Conference: International Symposium on Fusion Nuclear Technology-11 (ISFNT-11) edition:11 location:Barcelona, Spain date:15-20 September, 2013
Article number: 2014.03.066
Abstract: During future ITER maintenance operations, sensors and their embarked electronics will be exposed to a hostile and radioactive environment. This paper presents the design of a MGy radiation tolerant 16 bit resolver-to-digital converter (RDC) in 130 nm CMOS technology. The RDC features a Type II digital tracking loop, able to track resolvers with speeds up to 300 rps, and excitation frequencies up to 4 kHz. The RDC uses two integrated ΔΣ-analog-to-digital converters (ADCs) to digitize the resolver outputs. The 16 bit, 10 kHz ADCs utilize a correlated double sampling technique to remove radiation induced offset and 1/f-noise. The front-end features a static angular resolution of 16 bits (4.2 arcsecrms) and a resolution of 10 bits (6 arcminrms) at a rotor speed of 100 rps. The circuit has a simulated radiation tolerance exceeding 1 MGy. It has the ability to operate under temperatures up to 125 °C, and to allow multiplexing with signals from other conventional sensors for compact, robust read-out architectures.

Radiation hardening; CMOS; IC; ITER; Resolver-to-digital converter; Total ionizing dose
ISSN: 0920-3796
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering (ESAT) TC, Technology Campus Geel
Technologiecluster ESAT Elektrotechnische Engineering
ESAT - MICAS, Microelectronics and Sensors
Externen TM K
× corresponding author
# (joint) last author

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