Patent · US Active

Temperature sensor circuit, device, system, and method

US7771115B2 · kind B2 · utility

20Cited by
12References
10Claims
0Family size

Assignee

Inventor

Key dates

Filing dateAug 16, 2007
Grant dateAug 10, 2010
Priority date—
Expiry dateMay 30, 2028

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01K13/00
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A sensor, device, system and method for sensing temperature includes a pull up circuit coupled to a pull down circuit for generating a variable pull up output current and a variable pull down output current varying according to circuit elements responsive to temperature change. A pull up transistor and a pull down transistor are respectively serially coupled to first and second switches for alternatingly respectively switching additional pull up and pull down current into the pull up output current and the pull down output current. A comparator controls the additional pull up and pull down currents in response to a comparison of a summed output voltage and a reference voltage.

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