Patent ID: 11971313
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 32:
33. A temperature sensing circuit, comprising:
a thermistor comprising a first MOS transistor having a first drain, a first source, a first gate and a first body, wherein the first MOS transistor is configured to operate in weak inversion mode with a negative temperature coefficient drain-source resistance;
an output terminal coupled to the first source and configured to generate a positive temperature coefficient output voltage; and
a current source comprising a second MOS transistor having a second drain, a second source, a second gate and a second body, wherein the second gate is coupled to the first source and configured to impose a drain-source of the first MOS transistor; and
wherein the first body and second body are directly physically connected to ground.