Patent · US Active

Time-controlled switch capacitor based temperature sensor

US11015985B2 · kind B2 · utility

1Cited by
8References
19Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 30, 2018
Grant dateMay 25, 2021
Priority date—
Expiry dateMay 9, 2039

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01L23/34
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An apparatus comprises: a first circuitry to charge first and second capacitors to a predetermined voltage level; a second circuitry to discharge the first capacitor through a diode at a first time; a third circuitry to discharge the second capacitor through the diode at a second time, wherein the second time is greater than the first time; a comparator to compare a first voltage of the first capacitor with a second voltage of the second capacitor; and logic to adjust a scaling factor applied to the second voltage according to an output of the comparator.

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