Publication

Single Core Fully Integrated CMOS Micro-Fluxgate Magnetometer

Radivoje Popovic, Pavel Kejik
2002
Conference Papers

Abstract

A new fully integrated 2D micro-fluxgate magnetometer is presented. This magnetometer is integrated in a standard CMOS process and uses a ferromagnetic core integrated on the chip by a photolithographic post process compatible to the integrated circuit technology. This core is placed diagonally above four excitation coils, two for each measurement axis. A novel electronic signal extraction technique is presented, whose realization results in a magnetic sensitivity of 160 V/T and a linear range of ± 50 μT. The magnetic equivalent noise spectral density is 70 nT/√Hz at 1 Hz, and the total power consumption is as low as 25 mW for the 5 V power supply.

Official source

https://infoscience.epfl.ch/entities/publication/4eb0d880-1e32-40a2-af6c-61b3828657a6

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Radivoje Popovic, Pavel Kejik
2002
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4eb0d880-1e32-40a2-af6c-61b3828657a6

About this result

Related concepts (32)

Integrated circuit

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Large numbers of miniaturized transistors and other electronic components are integrated together on the chip. This results in circuits that are orders of magnitude smaller, faster, and less expensive than those constructed of discrete components, allowing a large transistor count.

Magnetometer

A magnetometer is a device that measures magnetic field or magnetic dipole moment. Different types of magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location. A compass is one such device, one that measures the direction of an ambient magnetic field, in this case, the Earth's magnetic field. Other magnetometers measure the magnetic dipole moment of a magnetic material such as a ferromagnet, for example by recording the effect of this magnetic dipole on the induced current in a coil.

Mixed-signal integrated circuit

A mixed-signal integrated circuit is any integrated circuit that has both analog circuits and digital circuits on a single semiconductor die. Their usage has grown dramatically with the increased use of cell phones, telecommunications, portable electronics, and automobiles with electronics and digital sensors. Integrated circuits (ICs) are generally classified as digital (e.g. a microprocessor) or analog (e.g. an operational amplifier). Mixed-signal ICs contain both digital and analog circuitry on the same chip, and sometimes embedded software.

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Single Core Fully Integrated CMOS Micro-Fluxgate Magnetometer

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