Integrated magnetometer with a digital output
Conference
·
· IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:6090132
- Univ. Karlsruhe, Institut fur Elektrotechnische Grundlagen der Informatik, Hertzstr. 16, D-7500 Karlsruhe 21 (DE)
This paper reports on a magnetometer with a 50 mm{sup 2} pickup coil, a sensor SQUID, a flux transformer and a 1 bit A/D-converter integrated on a single 6 {times} 12 mm{sup 2} Silicon chip in the Nb-Nb{sub x}O{sub y}-PbInAu technology. The pickup coil has a single turn with a 25 {mu}m wide Nb strip. Operated in a flux-locked loop and a clock frequency of 18.4 MHz, the achieved flux noise and magnetic field sensitivity are 3.5 {mu}{phi}{sub 0}/square root of Hz and 8.5 fT/square root of Hz at 1.5 Hz. With a digital feedback of constant step size a maximum slew rate of 11 500{phi}{sub 0}/s has been measured. Below the maximum slew rate the linearity between input and output has been investigated.
- OSTI ID:
- 6090132
- Report Number(s):
- CONF-900944--
- Conference Information:
- Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANALOG-TO-DIGITAL CONVERTERS
CHALCOGENIDES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FABRICATION
FLUXMETERS
GOLD ALLOYS
INDIUM ALLOYS
INTEGRATED CIRCUITS
LEAD ALLOYS
MAGNETIC FLUX
MAGNETOMETERS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
MICROWAVE EQUIPMENT
MODE LOCKING
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SEMIMETALS
SILICON
SQUID DEVICES
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES
TRANSFORMERS
TRANSITION ELEMENT COMPOUNDS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANALOG-TO-DIGITAL CONVERTERS
CHALCOGENIDES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FABRICATION
FLUXMETERS
GOLD ALLOYS
INDIUM ALLOYS
INTEGRATED CIRCUITS
LEAD ALLOYS
MAGNETIC FLUX
MAGNETOMETERS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
MICROWAVE EQUIPMENT
MODE LOCKING
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SEMIMETALS
SILICON
SQUID DEVICES
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES
TRANSFORMERS
TRANSITION ELEMENT COMPOUNDS