A pressure sensing device comprises a substrate having an opening, a pressure sensor die electrically connected to the substrate, and a pedestal having an upper surface that extends through the opening in the substrate, with the upper surface affixed to the sensor die. The pedestal has a pressure port...http://www.google.com.au/patents/US7861595?utm_source=gb-gplus-sharePatent US7861595 - Pressure sensing device for harsh environments
