Patent ID: 7857510

Claim:
A temperature sensor, comprising: a bandgap circuit comprising a first transistor and a second transistor, wherein the first transistor includes a terminal configured to have a voltage indicative of a temperature of a substrate; a gain circuit comprising first and second input terminals and configured to provide an output that varies substantially linearly with changes in the temperature of the substrate, wherein the first input terminal is coupled to the terminal of the first transistor such that a voltage of the first input terminal is proportional to the voltage of the terminal of the first transistor; and an offset circuit coupled to the second input terminal of the gain circuit, to the terminal of the first transistor, and to a terminal of the second transistor, wherein the offset circuit is configured to output an offset voltage to the second input terminal of the gain circuit, and wherein the offset voltage is proportional to a difference between the voltage of the terminal of the first transistor and a voltage of the terminal of the second transistor.