Title :
Low noise CMOS micro-fluxgate magnetometer
Author :
Drljaca, P.M. ; Kejik, P. ; Vincent, F. ; Popovic, R.S.
Author_Institution :
Inst of Microelectron. & Microsys., Swiss Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
We present a new two-axis fluxgate magnetometer fully integrated in CMOS technology. The magnetometer exhibits excellent sensitivity of 2700 V/T and the magnetic equivalent noise spectral density of 6nT//spl radic/Hz at 1 Hz. The total power consumption is as low as 35 m W from the single 5 V power supply. The low noise characteristic is obtained using the combination of good magnetic . material properties and electronic post-modulation technique to reduce the noise coming from CMOS electronic part.
Keywords :
fluxgate magnetometers; magnetic noise; magnetic sensors; power consumption; sensitivity; 35 mW; 5 V; CMOS electronic part; CMOS technology; electronic post-modulation; low noise characteristics; magnetic equivalent noise; material properties; power consumption; power supply; sensitivity; spectral density; two-axis fluxgate magnetometer; CMOS technology; Coils; Degradation; Magnetic cores; Magnetic field measurement; Magnetic noise; Magnetic sensors; Magnetometers; Noise reduction; Temperature sensors;
Conference_Titel :
TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th International Conference on, 2003
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7731-1
DOI :
10.1109/SENSOR.2003.1215313
