Analog Devices,inc.

Analog Devices Global

Gary Casey

Eoin Edward English

Colin Gerard Lyden

Mark Murphy

Alan J O'Donnell

Santiago Iriarte

Christian Jimenez

Javier Calpe Maravilla

John Anthony Cleary

Alberto Marinas

Alan Patrick Cahill

Krystian Balicki

Mel J Conway

Eoghan Moloney

Thomas F Roche

Thomas Brendan O'Dowd

Fintan Michael Leamy

Brian Joseph Moss

Mark J Murphy

Mel Conway

Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.

Vertically integrated systems

A method and apparatus for automatic resonance detection is disclosed for a motor-driven mechanical system such as a voice coil motor (VCM) in which a resonance detector and driver are provided. The automatic resonance detector is implemented on the same integrated circuit as the driver, and dynamically determines the natural resonant frequency of the VCM driven by the driver. The resonant frequency is determined by measuring the back electromotive force (BEMF) of the VCM, detecting the slope of the BEMF signal, and determining the resonant frequency from the slope of the BEMF signal.

Control techniques for motor driven systems utilizing back-EMF measurement techniques

A method and a device for detecting user input includes receiving a user input at an input arrangement of a user interface. The input arrangement has at least one piezoelectric sensor that generates an electric signal in response to the input. The electric signal is processed to determine the presence of the input. The processing may indicate the magnitude of the force of the input, in addition to the input's location. An output arrangement of the user interface generates an output in response to the processing. The output may be a haptic, audio or visual output.

Method and device for detecting user input

An apparatus, system and method for controlling drive patterns is disclosed. A digital engine for controlling drive patterns may include a profile controller to program characteristics of one or more drive patterns for one or more piezoelectric actuators. The digital engine may further include a register array to store profile information for the one or more drive patterns. Each drive pattern may comprise a plurality of pulses with each pulse having a slope. The digital engine may also include a digital pattern generator to generate the one or more drive patterns based upon the profile information stored in the register array. The digital engine may further include a slope shaping circuit to modify one or more signals based upon an input from the digital pattern generator.

Integrated PWM slope control driving mechanism for gradually delivering energy to a capacitive load

An integrated circuit ( ) comprises a microprocessor ( ), an ADC ( ) and a serial interface ( ) for communicating the integrated circuit with an external device. An analogue input port ( ) is provided for inputting analogue signals to the ADC ( ). A switch circuit ( ) is provided for selectively and alternately configuring the integrated circuit ( ) to operate in a first mode and in a second mode. In the first mode the serial interface ( ) communicates with the microprocessor ( ) through the switch circuit ( ), and in the second mode the serial interface ( ) communicates with the ADC ( ) through the switch circuit ( ). In the second mode conversion results are transferred from the ADC ( ) through the switch circuit ( ) to the serial interface ( ) independently of the microprocessor ( ) for transmission therefrom to an external device. In the first mode the ADC ( ) is operable under the control of the microprocessor ( ).

INTEGRATED CIRCUIT COMPRISING A MICROPROCESSOR AND AN ANALOGUE TO DIGITAL CONVERTER WHICH IS SELECTIVELY OPERABLE UNDER THE CONTROL OF THE MICROPROCESSOR AND INDEPENDENTLY OF THE MICROPROCESSOR, AND A METHOD FOR OPERATING THE INTEGRATED CIRCUIT

Growing community of inventors

Prospect, Ireland

Gary Casey