公开(公告)号：US20210278385A1

公开(公告)日：2021-09-09

申请号：US17195027

申请日：2021-03-08

Applicant: pSemi Corporation

Inventor： Vivek Saraf ,  Vishnu Srinivasan

IPC: G01N33/00 ,  H01L23/34 ,  G01N27/22 ,  G01K7/20 ,  G01L19/00

Abstract: Novel integrated circuit environmental and temperature sensors in combination with measurement circuitry fully integrated as part of an ASIC die, which may be co-packaged with a pressure sensor integrated circuit to create a compact yet sensitive environment monitoring product. Embodiments may include one or more integrated local heating elements and control circuitry that are power supply independent, make efficient use of battery power, include an accurate in-built temperature detection capability, and provide digital close-loop control of the heating elements.

公开(公告)号：US20240044857A1

公开(公告)日：2024-02-08

申请号：US18453137

申请日：2023-08-21

Applicant: pSemi Corporation

Inventor： Vivek Saraf ,  Vishnu Srinivasan

IPC: G01N33/00 ,  G01K7/20 ,  G01L19/00 ,  G01N27/22 ,  H01L23/34

CPC classification number: G01N33/0031 ,  G01K7/20 ,  G01L19/0092 ,  G01N27/223 ,  G01N27/227 ,  H01L23/345

Abstract: Novel integrated circuit environmental and temperature sensors in combination with measurement circuitry fully integrated as part of an ASIC die, which may be co-packaged with a pressure sensor integrated circuit to create a compact yet sensitive environment monitoring product. Embodiments may include one or more integrated local heating elements and control circuitry that are power supply independent, make efficient use of battery power, include an accurate in-built temperature detection capability, and provide digital close-loop control of the heating elements.

公开(公告)号：US11761936B2

公开(公告)日：2023-09-19

申请号：US17195027

申请日：2021-03-08

Applicant: pSemi Corporation

Inventor： Vivek Saraf ,  Vishnu Srinivasan

IPC: G01N27/22 ,  G01L19/04 ,  G01N33/00 ,  G01K7/20 ,  G01L19/00 ,  H01L23/34

CPC classification number: G01N33/0031 ,  G01K7/20 ,  G01L19/0092 ,  G01N27/223 ,  G01N27/227 ,  H01L23/345

Abstract: Novel integrated circuit environmental and temperature sensors in combination with measurement circuitry fully integrated as part of an ASIC die, which may be co-packaged with a pressure sensor integrated circuit to create a compact yet sensitive environment monitoring product. Embodiments may include one or more integrated local heating elements and control circuitry that are power supply independent, make efficient use of battery power, include an accurate in-built temperature detection capability, and provide digital close-loop control of the heating elements.

公开(公告)号：US20220260515A1

公开(公告)日：2022-08-18

申请号：US17176972

申请日：2021-02-16

Applicant: pSemi Corporation

Inventor： Vivek Saraf

IPC: G01N27/22 ,  H01L23/64 ,  H01L23/29

Abstract: Circuits and methods for extending the linear range of IC-based environmental sensors. The IC-based environmental sensors may sense environmental characteristic such as humidity levels, the presence and/or concentration of specific chemicals, and/or the presence and/or concentration of specific biological molecules. The linearity of an environmental sensor can be extended by heating the sensor within a range of non-linear operation to artificially induce the sensor to operate within its linear range, and then accurately measuring, either directly or indirectly, the temperature rise caused by such heating. A correction factor is then determined based on the measured temperature rise that is combined with measurements from the sensor while operating within its non-linear range in order to generate an accurate estimate of an actual environmental characteristic.