6533b85bfe1ef96bd12bab08
RESEARCH PRODUCT
Quasi-digital conversion for resistive devices: application in GMR-based IC current sensors
Paulo P. FreitasSusana CardosoJordi MadrenasM. D. CubellsCandid ReigA. De Marcellissubject
EngineeringElectric current measurementAnalog IC; Current measurement; GMR sensor; Oscillator; Resistance-to-frequency converter; Hardware and Architecture; Electrical and Electronic EngineeringOscillators (electronic)Noise (electronics)Electron devices:Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors [Àrees temàtiques de la UPC]Polychlorinated biphenylsMicrosystemElectronic engineeringOscillatorDigital conversionElectrical and Electronic EngineeringGMR sensorResistive touchscreenbusiness.industrySensorsElectrical engineeringElectromagnetisme -- MesuramentsAnalog ICResistance-to-frequency converterCMOS integrated circuitsCurrent measurementCMOSHardware and ArchitectureElectromagnetic measurementsvisual_artElectronic componentvisual_art.visual_art_mediumCurrent (fluid)businessdescription
Resistive devices, including sensors, are used in a huge range of applications within different scenarios. When a complete system is considered, a quasi-digital output is often recommendable. If the conversion is operated at device level, some problems such as noise disturbs, insertion losses and so on, can be reduced. In this work, we describe a resistance-tofrequency (R-f) converter with a suggested application in low current monitoring by means of GiantMagnetoResistance (GMR) sensors. Specific devices have been designed and microfabricated. The system has been tested by means of discrete components with a PCB. The complete microsystem monolithic integration in a standard CMOS technology has been also analyzed. Peer Reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-02-01 |