公开(公告)号：US11927493B2

公开(公告)日：2024-03-12

申请号：US17644212

申请日：2021-12-14

Applicant: NXP B.V.

Inventor： Saurabh Goyal ,  Sanjay Kumar Wadhwa ,  Firas N. Abughazaleh ,  Atul Kumar

IPC: G01K7/01 ,  G01K7/25

CPC classification number: G01K7/25 ,  G01K7/01

Abstract: A temperature sensor includes a sensing element and a load. Multiple different currents pass through the sensing element in a sequential manner. Based on each current that passes through the sensing element, the sensing element outputs a complementary-to-absolute-temperature (CTAT) voltage and another current. Further, the currents that pass through the sensing element and the currents that the sensing element output separately pass through the load and result in the generation of multiple load voltages across the load. A current density ratio of the temperature sensor is determined based on the load voltages generated across the load. Further, a temperature value indicative of a temperature sensed by the temperature sensor is generated based on the current density ratio and the CTAT voltages outputted by the sensing element based on the different currents that pass therethrough.

公开(公告)号：US20230184594A1

公开(公告)日：2023-06-15

申请号：US17644212

申请日：2021-12-14

Applicant: NXP B.V.

Inventor： Saurabh Goyal ,  Sanjay Kumar Wadhwa ,  Firas N. Abughazaleh ,  Atul Kumar

IPC: G01K7/25 ,  G01K7/01

CPC classification number: G01K7/25 ,  G01K7/01

Abstract: A temperature sensor includes a sensing element and a load. Multiple different currents pass through the sensing element in a sequential manner. Based on each current that passes through the sensing element, the sensing element outputs a complementary-to-absolute-temperature (CTAT) voltage and another current. Further, the currents that pass through the sensing element and the currents that the sensing element output separately pass through the load and result in the generation of multiple load voltages across the load. A current density ratio of the temperature sensor is determined based on the load voltages generated across the load. Further, a temperature value indicative of a temperature sensed by the temperature sensor is generated based on the current density ratio and the CTAT voltages outputted by the sensing element based on the different currents that pass therethrough.