Patent ID: 6901805

Claim:
A pressure sensing device, for measuring the pressure of a fluid, comprising: a measurement diaphragm, which is at least partially made of semiconductor material and is provided with a first surface and a second surface that are exposed respectively to a first pressure and to a second pressure, said measurement diaphragm being subjected to a deformation, following the application of said first pressure and said second pressure; and a resonant element, at least partially made of semiconductor material, which is provided with a first end portion and with a second end portion for mechanically coupling said resonant element to said measurement diaphragm, the oscillation frequency of said resonant element varying as a function of the deformation, to which said measurement diaphragm is subjected; and first circuit means for generating a sensing signal, which is indicative of the oscillation frequency of said resonant element; characterized in that said resonant element comprises second circuit means for increasing the intensity of said sensing signal, said second circuit means being at least partially integrated with the structure of said resonant element.