Patent · US Active

Bandgap circuit having a zero temperature coefficient

US8179115B2 · kind B2 · utility

4Cited by
5References
15Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 15, 2009
Grant dateMay 15, 2012
Priority date—
Expiry dateDec 23, 2030

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG05F3/30
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

A bandgap circuit is provided, which includes a current source, a voltage boost circuit, a voltage input circuit, a voltage equalizer circuit, and a voltage output circuit. The current source provides a first current, a second current, and a third current, which are equal to one another. The voltage boost circuit provides a boost voltage by a single current path. The voltage input circuit receives the first and the second currents, and provides a first input voltage and a second input voltage based on the boost voltage. The voltage equalizer circuit receives the first and the second input voltages and equalize the two input voltages. The voltage output circuit provides a bandgap reference voltage according to the third current.

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