Silicon Laboratories Inc.

Javelin Semiconductor, Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Cirrus Logic Inc.

Psemi Corporation

Nxp B.v.

St-ericsson Sa

Vishnu Shankar Srinivasan

G Tyson Tuttle

Jeffrey William Scott

Donald A Kerth

G Diwakar Vishakhadatta

Richard T Behrens

David E Bockelman

Tod Paulus

Caiyi Wang

Lysander Lim

Mark S Spurbeck

Aslamali A Rafi

Eric Kimball

Augusto Manuel Marques

Anil Samavedam

David R Welland

Ion E Opris

Keith Bargroff

Gregory Takeo Uehara

Jason Powell Rhode

James P Maligeorgos

Eric R Garlepp

Timothy Joseph Dupuis

Dan Bernard Kasha

Johann Guy Gaboriau

Alessandro Piovaccari

John James Paulos

Russell Croman

Vivek Saraf

John Robert Pacourek

Eric Clay Gaalaas

Justin Dougherty

Gary B Levy

Brett O Mitchelson

Allessandro Piovaccari

Methods and devices to mitigate time varying impairments in sensors are described. The application of such methods and devices to pressure sensors facing time varying parasitic capacitances due to water droplets is detailed. Benefits of auto-zeroing technique as adopted in disclosed devices is also described.

Parasitic insensitive sampling in sensors

Novel integrated circuit environmental and temperature sensors in combination with measurement circuitry fully integrated as part of an ASIC die, which may be co-packaged with a pressure sensor integrated circuit to create a compact yet sensitive environment monitoring product. Embodiments may include one or more integrated local heating elements and control circuitry that are power supply independent, make efficient use of battery power, include an accurate in-built temperature detection capability, and provide digital close-loop control of the heating elements.

Compact humidity and pressure sensor with temperature control

In an embodiment, a power amplifier (PA) includes a signal processing path including gain stages to receive a radio frequency (RF) signal and to output an amplified RF signal, sensors coupled to the signal processing path each to sense a characteristic of operation of the PA, and a microcontroller configured to execute instructions and to receive the operation characteristic(s) and to control one or more parameters of the signal processing path responsive this operation characteristic.

Power amplifier having an integrated microcontroller

In one implementation, a power amplifier may include a gain device to receive an input signal and to output an amplified signal, and a compensation device coupled to the gain device to compensate for a change in a capacitance of the gain device occurring due to a change in the input signal. The power amplifier may be formed using a complementary metal oxide semiconductor (CMOS) process.

Compensating for non-linear capacitance effects in a power amplifier

Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

Partitioned radio-frequency apparatus and associated methods

Embodiments are directed to capacitance compensation via a compensation device coupled to a gain device to compensate for a capacitance change occurring due to an input signal change, along with a controller coupled to the compensation device to receive the input signal and to control an amount of compensation based on the input signal. In some embodiments, banks may be formed of multiple compensation devices, where each of the banks has a different size and is coupled to receive a different set of bias voltages.

Non-linear capacitance compensation

A radio-frequency apparatus includes an integrated circuit. The integrated circuit includes receiver analog circuitry, receiver digital circuitry, a digital-to-analog converter, and a signal selector. The receiver analog circuitry receives radio-frequency signals, and provides a first digital signal. The receiver digital circuitry receives the first digital signal, and provides a second digital signal. The digital-to-analog converter converts the second digital signal into a first analog signal. The signal selector receives the second digital signal and the first analog signal, and selectively provides one of the second digital signal and the first analog signal as an output signal of the integrated circuit.

Radio-frequency apparatus and associated methods

A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.

Digital architecture for radio-frequency apparatus and associated methods

In one embodiment, a method includes generating a current that is proportional to a mobility and an oxide capacitance of a tracking device and independent of a threshold voltage variation of the tracking device, generating a voltage from the current, and providing the voltage as at least part of a bias voltage for another device. In one embodiment, this other device may be a compensation circuit coupled to a main device to compensate for capacitance non-linearity of the main device.

Generating a process and temperature tracking bias voltage

In one embodiment, the present invention includes an apparatus having at least two gain stages to receive incoming signals and to output amplified signals, along with multiple regulators. More specifically, a linear regulator can be coupled to the first gain stage to provide a first regulated voltage to the first gain stage, and a switching regulator coupled to the second gain stage to provide a second regulated voltage to the second gain stage.

Supply control for multiple power modes of a power amplifier

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Austin, TX, United States of America

Vishnu Shankar Srinivasan