Stmicroelectronics S.r.l.

Alma Mater Studiorum-Universitá Di Bologna

Alessia Maria Elgani

Roberto Antonio Canegallo

Giulio Ricotti

Antonio Gnudi

Eleonora Franchi Scarselli

Luca Perilli

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

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Pavia, Italy

Alessia Maria Elgani