Other

Microchip Technology Inc.

Liaisons Electroniques-mecaniques Lem Sa

Lem Intellectual Property Sa

Innovative Silicon S.a.

Ecole Polytechnique Féderale De Lausanne (epfl)

Maher Kayal

Marc Pastre

Michel Declercq

Marija Blagojevic

Philippe Deval

Lionel Nicolas Portmann

Fabien Vaucher

Hubert Blanchard

Thierry Barras

Laurent Fabre

Fabrizio Lo Conte

Giovanni Maria Anelli

Andrea Ajbl

Lionel Portman

Magnetic field sensor including a magnetic field sensing circuit () comprising a reference magnetic field generator () and a magnetic field sensing cell (), and a signal processing circuit () connected to the output of the magnetic field sensing cell and comprising a demodulator circuit and a gain correction feedback circuit () for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The sensor further comprises a reference current generator () configured to generate a reference current I ref, the reference current generator connected to the magnetic field sensing circuit () configured for generating the reference magnetic field B ref and to the gain correction feedback circuit configured for providing a reference signal (y) to which an output signal of the demodulator circuit may be compared.

Autonomously calibrated magnetic field sensor

A magnetic field sensor comprises a reference magnetic field generator (), a magnetic field sensing cell () including Hall effect sensing elements (), and a signal processing circuit () connected to the output () of the magnetic field sensing cell and comprising one or more feedback lines () for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The reference magnetic field generator is adapted to generate a frequency modulated reference magnetic field. The signal processing circuit further includes a modulator connected to the magnetic field sensing cell, adapted to modulate the output signal thereof at a frequency different from the modulation frequency of the reference magnetic field generator.

Continuously calibrated magnetic field sensor

An electronic amplifier circuit comprising an operational amplifier circuit, such as a two-stage operational amplifier circuit, in tandem with a operational transconductance amplifier. The electronic amplifier circuit has high open-loop gain and high gain-bandwidth while maintaining stability over a wide range of operating parameters.

Load and line regulation using operational transconductance amplifier and operational amplifier in tandem

There are many inventions described and illustrated herein. In a first aspect, the present invention is a technique and circuitry for reading data that is stored in memory cells. In one embodiment of this aspect, the present invention is a technique and circuitry for generating a reference current that is used, in conjunction with a sense amplifier, to read data that is stored in memory cells of a DRAM device. The technique and circuitry for generating a reference current may be implemented using an analog configuration, a digital configuration, and/or combinations of analog and digital configurations.

Reference current generator, and method of programming, adjusting and/or operating same

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St-Sulpice, Switzerland

Maher Kayal