Stmicroelectronics S.r.l.

Alma Mater Studiorum-universitá Di Bologna

Luca Perilli

Roberto Antonio Canegallo

Giulio Ricotti

Antonio Gnudi

Eleonora Franchi Scarselli

Alessia Maria Elgani

Luca Perugini

Mauro Scandiuzzo

Salvatore Valerio Cani

Eleonora Franchi

Francesco Renzini

Matteo D'Addato

A circuit includes a clock input node, a first signal input node configured to receive a first modulated signal switching between a first DC voltage and a second DC voltage, a bias circuit, a first output node, a first capacitor, a second capacitor, and switching circuitry coupled to the first capacitor and the second capacitor. Control circuitry is configured to initially set the switching circuitry in a first configuration in response to the first modulated signal having the second DC voltage, thereby charging the first capacitor to the second DC voltage and charging the second capacitor to the first DC voltage, and subsequently set the switching circuitry in a second configuration in response to an edge detected in the clock signal, thereby producing the first threshold voltage at the first output node after charge redistribution taking place between the first and second capacitors.

Threshold voltage generator circuit and corresponding receiver device

In one example, a circuit includes a first node to receive an analog signal that is an amplitude modulated radio-frequency signal for a digital signal. An output node is configured to provide an output signal indicative of rising and falling edges of an envelope of the analog signal. The rising and falling edges are indicative of rising and falling edges of the digital signal. A first current path is disposed between a power supply node and the first node. The first current path includes a first transistor coupled between the first node and a first bias source. The first bias source is coupled between the first transistor and the power supply node. The output node is coupled to a first intermediate node in the first current path between the transistor and the first bias source. A control terminal of the first transistor is coupled to the output node via a feedback network.

Detection circuit, corresponding device and method

A communication cell for an integrated circuit includes a physical interface configured to supply an input signal (for example, a capacitive signal or an ohmic signal). A receiver circuit operates to receive the capacitive signal and generate a first intermediate signal. A buffer circuit operates to receive the ohmic signal and generate a second intermediate signal. An output stage including a selector device (for example, a multiplexer) configured to receive the first and second intermediate signals and selectively pass only one of those signals to the integrated circuit based on operating condition. The input signal may further be an inductive signal, with the output stage further functioning to selectively pass that signal based on operating condition.

Communication cell for an integrated circuit operating in contact and contactless mode, electronic chip comprising the communication cell, electronic system including the chip, and test apparatus

Contactless differential coupling structures can be used to communicate signals between circuits located on separate chips or from one chip to a probing device. The contactless coupling structures avoid problems (breaks, erosion, corrosion) that can degrade the performance of ohmic-type contact pads. The contactless coupling structures comprise pairs of conductive pads placed in close proximity. Differential signals are applied across a first pair of differential pads, and the signals are coupled wirelessly to a mating pair of conductive pads. Circuitry for generating and receiving differential signals is described.

Contact and contactless differential I/O pads for chip-to-chip communication and wireless probing

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Teramo, Italy

Luca Perilli