Abstract:
A sensing element (25) is integrated in a semiconductor material chip (60) and has a sensing diode (3), of a junction type, configured to be reverse biased so that its junction capacitance is sensitive to the local temperature. A reading stage (28) is coupled to the sensing element for detecting variations of the junction capacitance of the sensing diode and outputting a reading acquisition signal proportional to the local temperature of the sensing diode. The sensing diode (3) has a cathode terminal (K) coupled to a biasing node (2) and an anode terminal (A) coupled to a first input (7) of the sensing stage (28). The biasing node (2) receives a voltage (DRH) positive with respect to the first input (7) of the sensing stage (28) for keeping the sensing diode reverse biased.
Abstract:
A sensing element (25) is integrated in a semiconductor material chip (60) and has a sensing diode (3), of a junction type, configured to be reverse biased so that its junction capacitance is sensitive to the local temperature. A reading stage (28) is coupled to the sensing element for detecting variations of the junction capacitance of the sensing diode and outputting a reading acquisition signal proportional to the local temperature of the sensing diode. The sensing diode (3) has a cathode terminal (K) coupled to a biasing node (2) and an anode terminal (A) coupled to a first input (7) of the sensing stage (28). The biasing node (2) receives a voltage (DRH) positive with respect to the first input (7) of the sensing stage (28) for keeping the sensing diode reverse biased.
Abstract:
A packaged sensor assembly includes: a packaging structure (2), having at least one opening (18); a humidity sensor (5) and a pressure sensor (10), which are housed inside the packaging structure (2) and communicate fluidically with the outside through the opening (18), and a control circuit (7), operatively coupled to the humidity sensor (5) and to the pressure sensor (10); wherein the humidity sensor (5) and the control circuit (7) are integrated in a first chip (3), and the pressure sensor (10) is integrated in a second chip (8) distinct from the first chip (3) and bonded to the first chip (3).