%0 Journal Article
%T Very Low 1/f Noise and Radiation-Hardened CMOS Preamplifier for High-Sensitivity Search Coil Magnetometers
%+ Laboratoire d'Electronique et Electromagnétisme (L2E)
%+ Laboratoire de Physique des Plasmas (LPP)
%+ Laboratoire Charles Coulomb (L2C)
%A Rhouni, Amine
%A Sou, Gérard
%A Leroy, Paul
%A Coillot, Christophe
%< avec comité de lecture
%@ 1530-437X
%J IEEE Sensors Journal
%I Institute of Electrical and Electronics Engineers
%V 13
%N 1
%P 159-166
%8 2012-08-02
%D 2012
%R 10.1109/JSEN.2012.2211347
%K Magnetic sensors amplifier
%K Low l/f noise
%K ASIC
%K Radiation hardened
%K NEMI
%K Search coil magnetmeter
%K Space plasmas instruments
%Z Engineering Sciences [physics]/Electronics
%Z Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsJournal articles
%X A 4 nV/√(Hz) at 10 Hz preamplifier with a 12-mW power consumption in complimentary metal-oxide-semiconductor 0.35 μm technology has been developed to go one step further in the integration of the preamplifier of a search coil magnetometer. The present application-specific integrated circuit (ASIC) preamplifier, combined with a 10-cm length, 12-mm diameter, and 15 000 turns search coil sensor demonstrates a noise equivalent magnetic induction as low as 2 pT/√(Hz) at 10 Hz and 14 fT/√(Hz) at 4 kHz. The measured current noise is only 46 fA/√(Hz). AC magnetometers (from 100 mHz to a few kHz) based on search coil sensors are used for space plasma physics investigations because of their excellent robustness and very high sensitivity. The present ASIC preamplifier offers a way to considerably save weight, volume, and power. This paper will focus on the design of the ASIC, driven by the following criteria: low thermal and 1/f noise, radiation hardness for space purpose, and power consumption.
%G English
%L hal-01467697
%U https://hal.science/hal-01467697
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