Patent ID: 8852513

Claim:
A packaged integrated circuit gas sensor system, comprising: an integrated circuit package having a sensor cavity and a separate filter cavity defined therein; an integrated circuit gas sensor system disposed within the sensor cavity; and at least one filter material disposed within the filter cavity; where the filter cavity is in fluid communication with an ambient gaseous atmosphere outside the package, and the filter cavity is in fluid communication with the sensor cavity to form a gas entry path through the filter material between the outside ambient gaseous atmosphere and the sensor cavity defined within the package; where the sensor cavity is sealed from the outside ambient gaseous atmosphere except for the gas entry path through the filter material; and where the integrated circuit package further comprises: a sensor housing, a package lid coupled in sealing relationship to the sensor housing to form the sensor cavity and the separate filter cavity within the package, and a gas entry opening defined in the package lid in fluid communication with the filter cavity, the filter cavity being in fluid communication with the ambient gaseous atmosphere through the gas entry opening.