Patent ID: 9658118
Date: 2017-05-23
CPC Classifications: G01K

Claim:
1. A method for calibrating a first temperature sensor disposed on a substrate, the method comprising: providing a second temperature sensor on the substrate having the first temperature sensor disposed thereon, wherein the second temperature sensor is operative to perform temperature measurements based on thermal diffusivity (TD); obtaining a first temperature measurement using the first temperature sensor, wherein the first temperature sensor is operative to perform temperature measurements based on characteristics of a semiconductor junction, a bipolar transistor, or a MOSFET transistor; substantially concurrently with the obtaining of the first temperature measurement, applying a reference frequency signal to the second temperature sensor and obtaining a second temperature measurement using the second temperature sensor; computing, based on the first and second temperature measurements, a calibration adjustment value for the first temperature sensor operating based on the characteristics of a semiconductor junction, a bipolar transistor, or a MOSFET transistor; and adjusting, based on the computed calibration adjustment value, a third temperature measurement from the first temperature sensor operating based on the characteristics of a semiconductor junction, a bipolar transistor, or a MOSFET transistor.