Gottfried-Gottfried, R.R.Gottfried-GottfriedBudde, W.W.BuddeJähne, R.R.JähneKück, H.H.KückSauer, B.B.SauerUlbricht, S.S.UlbrichtWende, U.U.Wende2022-03-092022-03-091995https://publica.fraunhofer.de/handle/publica/324593We report on a miniaturized magnetic field sensor system consisting of a fluxgate sensor fabricated in CMOS-compatible planar technology and a CMOS-ASIC for sensor supply, readout and signal processing using second harmonic principle with a feedback loop for zero field operation. The system exhibits a sensitivity of (9.2ñ0.1) mV/µT for a magnetic field range of ñ90µT and a temperature range of 0øC to 70øC. The 3 dB bandwith is 300 Hz and a noise value of 30 nT/(Hz)1/2 was estimated. Using 5V supply voltage a power consumption of 160mW for the system was measured.enASICCMOS-SchaltungFluxgate-SensorKundenschaltungMagnetfeldmessungSensorsystem621conference paper