Patent ID: 9116057
Filing Date: 2015-08-25
Classification: G01L,H01L

Abstract:
1. A pressure sensor, the sensor comprising: a housing comprising an input port configured to allow a media to enter the interior of the housing when the housing is placed in an environment containing the media; a substrate securely mounted within the housing; a stress isolation member mounted to the substrate, wherein a channel extends from an end of the input port through the substrate and the stress isolation member, wherein at least one trace is embedded within the stress isolation member; a sensor die bonded to the stress isolation member, the sensor die comprising a diaphragm having sensing circuitry formed thereon, wherein a first side of the diaphragm is exposed to an opening of the channel in the stress isolation member and the sensing circuitry is mounted to a second side of the diaphragm that is hermetically sealed from the opening of the channel in the stress isolation member; at least one via extending through the sensing die, the via electrically connecting the sensing circuitry to the at least one trace; and a vacuum reference cover hermetically bonded to the stress isolation member, the vacuum reference cover having a recess containing a vacuum formed therein, wherein the sensor die is located within the recess and the sensing circuitry is exposed to the vacuum.