Title :
A 92dB-DR 13mW ΔΣ Modulator for Spaceborn Fluxgate Sensors
Author :
Magnes, Werner ; Oberst, Matthias ; Valavanoglou, Aris ; Reichold, Ulrich ; Neubauer, Harald ; Hauer, Hans ; Falkner, Peter
Author_Institution :
Space Res. Inst., Graz
Abstract :
A 2-2 cascaded DeltaSigma modulator is adapted for near sensor digitization of the magnetic field measured by a fluxgate sensor. The chip contains three fluxgate channels (13mW each) and one voltage channel (10mW). The fluxgate channels achieve a DR of 92dB for field ranges greater than plusmn2,000nT with 10pT resolution. The chip operates up to 260krad of total ionizing dose. The chip uses 20mm2 in a 0.35mum CMOS process.
Keywords :
CMOS integrated circuits; aerospace instrumentation; delta-sigma modulation; fluxgate magnetometers; magnetic field measurement; magnetic sensors; 0.35 micron; 10 mW; 10 pT; 13 mW; CMOS process; delta-sigma modulator; fluxgate channels; magnetic field measurement; spaceborn fluxgate sensors; 1f noise; Coils; Delta modulation; Extraterrestrial measurements; Magnetic field measurement; Magnetic modulators; Magnetic sensors; Noise shaping; Space technology; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373457
