Infineon Technologies Ag

Lantiq Deutschland Gmbh

Infineon Technologies Austria Ag

Intel Mobile Communications Gmbh

Other

Lantiq Beteiligungs Gmbh & Co. Kg

Andreas Wiesbauer

Dietmar Straeussnigg

Martin Clara

Luis Hernandez

Christian Jenkner

Marc Fueldner

Antonio Di Giandomenico

Niccoló De Milleri

David San Segundo Bello

Elmar Bach

Richard Gaggl

Christoph Sandner

Jose Luis Ceballos

Athanasios Kollias

Hong Chen

Giuseppe Li Puma

Christian Grewing

Stefan Van Waasen

Dietmar Straussnigg

Christian Mandl

Luis Hernandez-Corporales

Thomas Poetscher

Martin Friedrich

Kay Winterberg

Alfons Dehe

Ulrich Krumbein

Peter Singerl

Christian Ebner

Cesare Buffa

Sergio Walter

Benno Muehlbacher

Thomas Pötscher

Ernesto Romani

Wilfried Florian

Stefano Marsili

Michael Kropfitsch

Wim Dehaene

Michael Reinhold

Alessandro Caspani

Roland Helm

Stephan Mechnig

Andres Quintero Alonso

Pedro Augusto Borrego Lambin Torres Amaral

Dario Giotta

Jorg Daniels

Andreas Kopetz

Susana Paton Alvarez

Bernd Goller

Arnaud Walther

Werner Simbuerger

Yossi Erlich

Fabio Ballarin

Christoph Bernhard Wurzinger

Manfred Punzenberger

Marc Füldner

Hubert Weinberger

Dirk Hammerschmidt

Dieter Draxelmayr

Lajos Gazsi

Marc Tiebout

Lukas Doerrer

Philipp Greiner

Matthias Friedrich Herrmann

Christian Fleischhacker

Christian Reindl

Gunar Lorenz

Shu-Ting Hsu

Koen Mertens

Carlos Andres Perez Cruz

Wolfgang Klatzer

Winfried Bakalski

Heinrich Schenk

Stefan Barzen

Daniel Gruber

Thomas Ferianz

Martin Krueger

Gerhard Metzger-Brueckl

Johann Strasser

Gerhard Lohninger

Peter Laaser

Alexander Kahl

Daniel Neumaier

Thomas Magesacher

Martin Wurzer

Lars Karlsson

Patrizia Greco

Michael Staber

Joerg Hauptmann

Francesco Polo

Georgi Nikolov Panov

Torbjorn Ivar Randahl

J&ouml;rg Hauptmann

Jorg Hauptmann

Giordano Tosolini

Dietmar Sträussnigg

Bernhard Wotruba

Luca Sant

Sven Derksen

Jörg Hauptmann

Enrique Prefasi

A circuit includes: a micro-electromechanical system (MEMS) microphone configured to generate a voltage signal at an output terminal of the MEMS microphone in response to a sound signal; a voltage-controlled-oscillator (VCO) coupled to the output terminal of the MEMS microphone and configured to output, at an output terminal of the VCO, a frequency modulated signal having a frequency proportional to the voltage signal; a frequency-to-digital (FTD) converter coupled to the output terminal of the VCO and configured to convert the frequency modulated signal into a digital output signal proportional to the frequency; a frequency-to-voltage (FTV) conversion circuit coupled to the output terminal of the VCO and configured to generate a bias voltage at an output terminal of the FTV conversion circuit in accordance with the frequency modulated signal; and a resistor coupled between the output terminal of the MEMS microphone and the output terminal of the FTV conversion circuit.

Operation point stabilization for VCO-ADC using switched-capacitor frequency-to-current conversion

A microphone includes a microelectromechanical system (MEMS) device responsive to sound waves or vibrations having an output coupled to a first node; a programmable gain amplifier or source follower having an input coupled to a second node, and an output for generating an analog signal, wherein the MEMS device output and the programmable gain amplifier or source follower input comprise a first nonlinear equivalent capacitance having a first capacitance-to-voltage (CV) profile; and a nonlinear capacitance component coupled to the first node, the second node, and at least one reference voltage node, wherein the nonlinear capacitance component comprises a second nonlinear equivalent capacitance having a second CV profile.

Capacitive linearization method applied to MEMS microphones systems

A microphone includes a first resistor circuit for receiving a bias voltage; an offset reduction circuit coupled to the first resistor circuit; a second resistor circuit coupled to the offset reduction circuit; an amplifier coupled to the second resistor circuit configured for receiving an input signal and generating an output signal; and a capacitor circuit coupled to the amplifier, the offset reduction circuit, and the second resistor circuit.

Offset reduction for silicon microphones

A sensor arrangement includes a substrate having a through opening between a first and a second main surface region, a sound transducing portion at the first main surface region of the substrate and spanning the through opening in the substrate, and a pressure sensing portion at the first main surface region of the substrate and fluidically coupled to the through opening in the substrate. The sound transducing portion includes a deflectable membrane structure, and a counter electrode. The pressure sensing portion includes a first and second rigid electrode and a deflectable membrane structure. The deflectable membrane structure of the pressure sensing portion opposes the plane of the first main surface region of the substrate. The first and second rigid electrodes of the pressure sensor form a reference capacitor of the pressure sensor, and the second rigid electrode and the membrane structure form a sense capacitor of the pressure sensor.

Sensor arrangement

A logarithmic amplifier includes programmable gain amplifiers each having a different gain, wherein an input of each of the programmable gain amplifiers is coupled to an input of the logarithmic amplifier; and a summing circuit having inputs coupled to a corresponding output of each of the programmable gain amplifiers and an output coupled to an output of the logarithmic amplifier, wherein the summing circuit generates a logarithmic transfer function having piecewise linear segments.

Logarithmic amplifiers in silicon microphones

A triple-membrane MEMS device includes a first membrane, a second membrane and a third membrane spaced apart from one another, wherein the second membrane is between the first membrane and the third membrane, a sealed low pressure chamber between the first membrane and the third membrane, a first stator and a second stator in the sealed low pressure chamber, and a signal processing circuit configured to read-out output signals of the triple-membrane MEMS device.

Signal processing circuit for triple-membrane MEMS device

A circuit includes a cross-talk compensation component including a power profile reconstruction component for reconstructing the power profile of a digital microphone coupled to a microelectromechanical (MEMS) device, wherein the power profile represents power consumption of the digital microphone over time between at least two operational modes of the digital microphone, and a reconstruction filter for modeling thermal and/or acoustic properties of the digital microphone; and a subtractor having a first input for receiving a signal from the digital microphone, a second input coupled to the cross-talk compensation component, and an output for providing a digital output signal.

System and method for fast mode change of a digital microphone using digital cross-talk compensation

An adaptive MEMS device includes a MEMS microphone and integrated circuitry, wherein the integrated circuitry is electrically connected to the MEMS microphone. The integrated circuitry reads out an output signal from the MEMS microphone and provides the output signal or a rendered output signal, via a first integrated interface, to an external processing device. Additionally, the integrated circuitry determines, at run-time, diagnostic data on the current condition of the MEMS device and provides, at run-time, the diagnostic data, via a second integrated interface, to the external processing device.

Adaptive MEMS device, codec for use with the MEMS device and method for providing diagnostic data, at run-time, on the current condition of a MEMS device

In accordance with an embodiment, a circuit includes: a first super source follower; a compensation circuit having a compensating node configured to provide a voltage of opposite phase of a voltage of an internal node of the first super source follower; and a first compensation capacitor coupled between an input of the first super source follower and the compensating node of the compensation circuit.

Super source follower

According to an embodiment, a digital microphone includes an analog-to-digital converter (ADC) for receiving an analog input signal; a DC blocker component coupled to the ADC; a digital low pass filter coupled to the DC block component; and a nonlinear compensation component coupled to the digital low pass filter for providing a digital output signal.

Digital non-linearity compensation in a silicon microphone

A system includes a first membrane, a second membrane and a third membrane spaced apart from one another, wherein the second membrane is between the first membrane and the third membrane, and the second membrane comprises a plurality of openings, a sealed low pressure chamber between the first membrane and the third membrane, and a plurality of electrodes in the sealed low pressure chamber.

Triple-membrane MEMS device

A device includes a readout circuit coupled between an input node and an output node; a microelectromechanical systems (MEMS) device coupled to the input node; and a first charge controlled clamp circuit coupled between the input node and a first bias node.

Charge controlled clamp for MEMS readout circuits

An analog-to-digital converter (ADC) includes a first controlled oscillator (CO) for generating at least one phase signal, and wherein the at least one phase signal generates a first output signal of the ADC; and at least one first frequency-controlled resistor (FDR) for receiving the at least one phase signal generated by the first CO, wherein the first CO and the at least one first FDR are coupled together at a first subtraction node of the ADC, and wherein the first subtraction node receives a first input signal.

VCO-ADC with frequency-controlled switched-capacitor feedback for linearization

A single-ended to differential converter includes a converter input, a first converter output, a second converter output, and an internal node, wherein the first converter output and the second converter output comprise a differential output; a non-inverting amplifier having an input coupled to the converter input, and an output coupled to the first converter output; an inverting amplifier having an input coupled to the first converter output, and an output coupled to the second converter output; a charge pump having a charge pump output capacitor coupled between the second converter output and the internal node; and a feedback capacitor coupled between the first converter output and the internal node.

Single to differential conversion in silicon microphone amplifiers

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Poertschach, Austria

Andreas Wiesbauer