2002 · 13 citations · 4 references
EngineeringComputer EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsSensorsCmos Circuit DesignDigital Integrated CircuitsIntegrated Circuit DesignMagnetic SensorsMetal-oxide-semiconductor Field-effect TransistorsSensor IntegrationIntegrated Magnetic SensorsMagnetic Field SensingMagnetic Field SensorsMeasurement System DesignMeasurement System ImplementationSaturationSaturation RegionSensor Interface Circuits
A magnetic field-to-voltage converter using a magnetic MOSFET (MAGFET) device has been designed, simulated and tested. The sensor was measured under magnetic fields ranging from 0 to 0.8 T and the obtained sensitivity was 0.03 T/sup 1/ with an offset value lower than 0.2%. A macro model for the MAGFET in the saturation region is presented. Also, we have designed a complete integrated measurement system including the sensor, bias interface circuit and a A/D converter based on a current-mode technique.
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