公开(公告)号：US20210364375A1

公开(公告)日：2021-11-25

申请号：US16877746

申请日：2020-05-19

Applicant: STMicroelectronics S.r.l.

Inventor： Marco ZAMPROGNO ,  Andrea BARBIERI ,  Pasquale FLORA ,  Raffaele Enrico FURCERI

IPC: G01L1/22 ,  G01D5/16 ,  G01B7/16

Abstract: A bridge driver circuit applies a bias voltage across first and second input nodes of a resistive bridge circuit configured to measure a physical property such as pressure or movement. A sensing circuit senses a bridge current that flows through the resistive bridge circuit in response to the applied bias voltage. A temperature dependent sensitivity of the resistive bridge circuit is determined by processing the sensed bridge current. A voltage output at first and second output nodes of the resistive bridge circuit is processed to determine a value of the physical property. This processing further involves applying a temperature correction in response to the determined temperature dependent sensitivity.