Patent ID: 7861595
Filing Date: 2011-01-04
Classification: G01L

Abstract:
1. A pressure sensing device, comprising: a substrate having an opening; a pressure sensor die electrically connected to the substrate; a pedestal having an upper surface that extends through the opening in the substrate, the upper surface of the pedestal affixed to the pressure sensor die, the pedestal having a pressure port that extends from the upper surface to a bottom surface of the pedestal, the pressure port containing a hermetic sealing tube therein; a hermetic sealing cover affixed to the substrate over the pressure sensor die, the hermetic sealing cover and the substrate configured to contain a reference pressure for the pressure sensor die; a media isolation component having a chamber filled with a fluid that transmits a pressure applied to the media isolation component to the pressure sensor die; a pressure connector capillary tube affixed within the pressure port of the pedestal and in communication with the sealing tube, the capillary tube and the sealing tube providing fluid communication between the chamber of the media isolation component and the pressure sensor die; wherein the substrate has electrical connections outside of the reference pressure that electrically connect to the pressure sensor die.