Patent ID: 8134214

Claim:
An electronic device, comprising: a substrate provided with at least one passing opening, a MEMS device with function of differential sensor provided with a first and a second surface comprising at least one portion sensitive to chemical and/or physical variations of fluids present in correspondence with a first and second opposed active surface thereof, said first surface of said MEMS device leaving said first active surface exposed and said second surface being provided with a further opening which exposes said second active opposed surface, wherein said first surface of said MEMS device faces said substrate and is spaced therefrom by a determined distance, said sensitive portion being aligned to the at least one passing opening of said substrate, the MEMS device further comprising a protective package, which incorporates at least partially said MEMS device and said substrate so as to leave said first and second opposed active surfaces exposed respectively through said passing opening of said substrate and said further opening of said second surface.