Patent ID: 7107854

Claim:
A media-isolated absolute pressure sensor apparatus comprising: a first pressure sensor operable to measure a first pressure difference between a first pressure and a second pressure applied across the first pressure sensor, the first pressure sensor responsive to the first pressure difference by providing a first output having a first slope response relative to the first pressure difference; a second pressure sensor operable to measure a second pressure difference between the second pressure and substantially a vacuum applied across the second pressure sensor, the second pressure sensor responsive to the second pressure difference by providing a second output having a second slope response relative to the second pressure difference; at least one equalizer circuit for adjusting the slope response of at least one of the first and second sensors such that the first slope is substantially the same as the second slope, and providing an at least one adjusted output corresponding of the first and second sensors; and a summing circuit for adding the substantially same slope outputs associated with the first and sensor sensors so as to provide an output signal indicative of an absolute pressure measurement of the first pressure.