Freescale Semiconductor,inc.

Nxp Usa, Inc.

Yean Ling Teo

Gerhard Trauth

Laurent Cornibert

Aaron A Geisberger

Hugues Beaulaton

Philippe Lance

Thierry Cassagnes

Eric Pierre Rolland

Thierry Laplagne

Stephan Ollitrault

Emil Cozac

Arlette Marty-Blavier

Arnaud Lachaise

A microelectromechanical systems (MEMS) device and a method for calibrating a MEMS device. The device includes a first semiconductor substrate including at least one MEMS component. The device also includes an application specific integrated circuit (ASIC) comprising a second semiconductor substrate. The second semiconductor substrate is attached to the first semiconductor substrate. The second semiconductor substrate includes at least one piezoresistive strain gauge. Each piezoresistive strain gauge includes at least one doped semiconductor region having a resistivity that is determined by a strain on said doped semiconductor region. The second semiconductor substrate also includes a circuit for evaluating a trim algorithm for the at least one MEMs component using one or more output values received from the at least one piezoresistive strain gauge.

MEMS device and method for calibrating a MEMS device

Vibration gyroscope circuitry, connectable to a vibrating MEMS gyroscope, includes drive circuitry for driving the gyroscope and a measurement circuit for providing a drive measurement signal indicating displacement of a mass along a drive axis. Sense circuitry processes a sense measurement signal of the gyroscope indicating displacement of the mass along a sense axis. A digital sample clock generator includes an oscillator for generating a master clock, a counter for counting master clock periods during one period of an input signal derived from the drive measurement signal, and a number count monitor for determining during how many input signal periods the number count stays constant and for comparing a number of constant periods with a critical number of constant periods. A frequency shifter triggers the oscillator to shift the master clock frequency whenever the monitor determines that the number of constant periods exceeds the critical number of constant periods.

In-band beating removal for a MEMS gyroscope

The present invention provides a current source comprising a first bias current control element, the first bias current control element being configured to generate a first current if the control value is lower than a reference value and configured to generate a second current if the control value equal to or higher than the reference value. In addition or alternatively the bias current source comprises a second bias current control element, the second bias current control element being configured to generate a third current if the control value is lower than or equal to the reference value and configured to generate a fourth current if the control value is higher than the reference value. Furthermore, the present invention provides an integrated circuit and a method.

Current source, an integrated circuit and a method

A ring oscillator circuit comprising a plurality of stages operably coupled output-to-input in a ring configuration. A frequency tuning stage comprises an inverting logic gate and a delay component. The delay component comprises a first capacitive component comprising a first terminal operably coupled to an output of the inverting logic gate and a second terminal operably coupled to a first reference voltage at least when the ring oscillator is disabled. The delay component further comprises a further capacitive component comprising a first terminal operably coupled to the output of the inverting logic gate and a second terminal selectively couplable to the first reference voltage and a second reference voltage. The second terminal of the further capacitive component is arranged to be operably coupled to the first reference voltage when the ring oscillator is enabled, and operably coupled to the second reference voltage when the ring oscillator is disabled.

Ring oscillator circuit and method of regulating aggregate charge stored within capacitive loading therefor

A detection circuit for an alternator regulator, and method therefor. The detection circuit comprises an input circuit arranged to receive a phase signal from an alternator regulator and to output an attenuated sense signal representative of the received phase signal, a detection component operably coupled to the input circuit and arranged to receive the attenuated sense signal output by the input circuit, and a blocking capacitance operably coupled between the input circuit and the detection component and arranged to block a DC component of the attenuated sense signal. The detection component is arranged to compare the received attenuated sense signal to at least one reference voltage signal, and to output a signal representative of a frequency of the phase signal from the alternator regulator based at least partly on the comparison of the received attenuated sense signal to the at least one reference voltage signal.

Method and apparatus for detecting a state of an alternator regulator

A system comprises a voltage regulator operably coupled to an external component, a voltage regulator reset circuit and at least one functional element supplied with a voltage by the voltage regulator. The voltage regulator reset circuit is arranged to repetitively reset the voltage regulator upon disconnection of the external component.

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Goyrans, France

Yean Ling Teo