Patent · US Active

Temperature sensors and methods of use

US11233503B2 · kind B2 · utility

0Cited by
12References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 20, 2020
Grant dateJan 25, 2022
Priority date—
Expiry dateJul 16, 2040

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG05F3/08
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

Embodiments of the disclosure are drawn to a low-voltage temperature sensor. The temperature sensor may include a waveform generator, a complementary-to-absolute-temperature (CTAT) voltage generator, a voltage reference, two comparators, and digital logic. A waveform of the waveform generator may be compared to both the CTAT voltage and the voltage reference. The output of the comparison of the CTAT and the waveform may be a pulse-width modulated signal that is temperature-dependent. The output of the comparison of the voltage reference and the waveform may be a signal with constant pulse width. The digital logic may receive the pulsed signals and take a ratio of the two signals to determine a temperature.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.