Nxp Usa, Inc.

Freescale Semiconductor,inc.

Marianne Maleyran

Jerome Romain Enjalbert

Jalal Ouaddah

Hugues Beaulaton

Keith L Kraver

Gerhard Trauth

Thierry Cassagnes

Sung Jin Jo

Volker Dietmar Wahl

Laurent Cornibert

Philippe Bernard Roland Lance

Bertrand Clou

Keith Kraver

Sung Jo

Raghavendra Sridhar

Systems and methods for converting a capacitance signal into a band-limited voltage signal for improved signal processing are disclosed herein. Such systems can include a capacitance-to-voltage converter configured to convert a capacitive signal from a capacitive device that operates at a mechanical frequency into a raw voltage signal, a clock generator configured to convert the mechanical frequency into one or more clock signals, and a filter component configured to apply a band-pass filter response to the raw voltage signal to convert the raw voltage signal into a band-limited voltage signal. The clock generator can be configured to apply the one or more clock signals to the filter component to drive a first pole and a second pole of the band-pass filter response to track the mechanical frequency of the capacitive device such that the geometric mean of the first pole and the second pole is substantially equal to the mechanical frequency.

Capacitance-to-voltage interface circuit

A method for voltage regulation includes reducing a power consumption of a voltage regulator during an IDLE phase, by disabling a feedback loop configured to regulate an internal voltage to a multiple of a reference voltage in response to the voltage regulator receiving a digital signal from a digital circuit. The internal voltage is proportional to an external voltage supplied to the digital circuit. A regulated accuracy of the external voltage is increased during a MEASUREMENT phase by enabling the feedback loop in response to the voltage regulator receiving the digital signal from the digital circuit.

Ultra low power linear voltage regulator

A drive circuitry for a vibration gyroscope is described. The drive circuitry comprises a digital phase shifter, a variable gain amplifier and a pulse signal generator arranged to generate a digital pulse signal having a frequency substantially equal to a drive frequency of the vibration gyroscope. A controller is arranged to connect drive actuation units of the vibration gyroscope to outputs of the pulse signal generator during a first start-up time period, to outputs of the digital phase shifter during a second start-up time period, and to outputs of the variable gain amplifier during a measurement time period. Furthermore, a vibration gyroscope device and a method of driving a vibration gyroscope are described.

Drive circuitry and method for a vibration gyroscope

A low drop-out voltage regulator, an integrated circuit, a sensor and a method of providing a regulated voltage are provided. The low drop-out voltage regulator comprises a regulated voltage driver for providing the regulated voltage in response to a control voltage, a feedback-loop circuit for generating the control signal such that the regulated voltage driving circuit provides the regulated voltage, and a pull-up circuit for pulling up the regulated voltage to a supply voltage when a difference between the supply voltage and the control voltage is smaller than a predetermined threshold value. In the feedback-loop circuit a first feedback voltage or a second feedback voltage is generated, respectively, on basis of a first ratio and a second ratio between the feedback voltage and the regulated voltage. The second feedback voltage is generated instead of the first feedback voltage when the regulated voltage is pulled-up to the supply voltage.

Low drop-out voltage regulator and a method of providing a regulated voltage

A voltage switching circuitry comprises a switching arrangement with a given number N of switches in series between a first terminal receiving a first voltage and a second terminal receiving a second voltage. The first voltage level is higher than the second voltage level, and N is at least equal to 2. A voltage-by-N divider, having N&#x2212;1 output taps, is arranged to divide the first voltage by N to a scaled down version of the first voltage having a voltage level below voltage max ratings of the switches. The N&#x2212;1 output taps of the divider are arranged to respectively output N&#x2212;1 third voltages having respective levels staged below the first voltage level. N&#x2212;1 max voltage generators generate N&#x2212;1 fourth voltages, respectively equal to the maximum of the second voltage and of each of the N&#x2212;1 third voltages. A switch control unit generates N control signals using the N&#x2212;1 fourth voltages. These N control signals have respective voltage levels staged between the first voltage level and the second voltage level. In addition, each of the N control signals controls one of the switches of the switching arrangement, respectively.

Voltage switching circuitry, integrated device and integrated circuit, and method of voltage switching

A power management arrangement for a mobile device comprising a digital circuit block and an analog circuit block, the power management arrangement being arranged to supply a first voltage to the analog circuit and a second voltage to the digital circuit, the power management arrangement comprising: an input unit adapted to receive input voltages from a plurality of power sources; a first voltage regulator coupled to the input unit and for supplying the first voltage; a second voltage regulator for supplying the second voltage and arranged to be selectively coupled to one of the first voltage regulator and input unit; and control logic adapted to select which of the received input voltages from the plurality of power sources provides power to the first and second voltage regulators, and to determine the magnitude of the first and second voltages supplied by the first and second voltage regulators.

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Saubens, France

Marianne Maleyran