Patent ID: 9360376
Filing Date: 2016-06-07
CPC Classification: G01J

Claim Text:
1. An apparatus comprising: a substrate; a dielectric stack having: a first dielectric layer formed over the substrate; a first electrically conductive layer formed over the first dielectric layer that extends between first and second thermopile junctions; a second electrically conductive layer formed over the second dielectric layer that extends between the first and second thermopile junctions; a channel formed in the dielectric stack that extends to the substrate; a cavity formed in the substrate that underlies the first thermopile junction and at least a portion of the resistive layer; a cap layer formed over the passivation layer, wherein the cap layer substantially seals the channel; and a calibration circuit that is coupled to the resistive layer, wherein the calibration circuit and resistive layer are configured to heat the first thermopile junction.