Patent ID: 11927493
Assignee: NXP B.V.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A temperature sensing method, comprising:
controlling, by an enabling circuit of a temperature sensor, a switching circuit of the temperature sensor to operate in a plurality of states; and
outputting, by a sensing element of the temperature sensor, based on a first plurality of currents that passes through the sensing element when the switching circuit operates in two or more states of the plurality of states, a plurality of complementary-to-absolute-temperature (CTAT) voltages and a second plurality of currents,
wherein each current of the first plurality of currents is different,
wherein when the switching circuit operates in the plurality of states, the first plurality of currents and the second plurality of currents pass through a load of the temperature sensor and a plurality of load voltages is generated across the load,
wherein a current density ratio of the temperature sensor is determined based on the plurality of load voltages, and
wherein a temperature value indicative of a temperature sensed by the temperature sensor is generated based on (i) the current density ratio and (ii) the plurality of CTAT voltages.