Title :
Quasi-static magnetoresistive sensor modeling for current-time conversion circuit applications
Author :
Roldán, A. ; Reig, C. ; Roldán, J. ; Cano-Abellán, A. ; Cardoso, S. ; Freitas, P.P.
Author_Institution :
Dept. of Electron., Univ. de Granada, Granada, Spain
Abstract :
In this paper we report a current-to-time converter (CTC) suitable for current sensor monitoring in low power applications. Based on a discrete resistence-to-frequency converter and a Giant MagnetoResistance (GMR) current sensor. Simulations have been done using a quasi-static electrical Verilog-A model for the GMR current sensor. A reduced set of parameters has been extracted to characterize the GMR sensor´s behavior. The application has been analyzed making use of different sensors, whose device parameters were previously extracted. Finally, the accuracy of the models has been tested by comparing with experimental transient measurements.
Keywords :
convertors; giant magnetoresistance; low-power electronics; magnetoresistive devices; sensors; GMR current sensor; current sensor monitoring; current-time conversion circuit applications; current-to-time converter; device parameters; discrete resistence-to-frequency converter; giant magnetoresistance current sensor; low power applications; quasistatic electrical Verilog-A model; quasistatic magnetoresistive sensor modeling; transient measurements; Frequency conversion; Integrated circuit modeling; Magnetic tunneling; Magnetoresistance; Oscillators; Resistance;
Conference_Titel :
Electron Devices (CDE), 2011 Spanish Conference on
Conference_Location :
Palma de Mallorca
Print_ISBN :
978-1-4244-7863-7
DOI :
10.1109/SCED.2011.5744197
