Patent · US Expired

Low power bandgap voltage reference circuit

US6774711B2 · kind B2 · utility

7Cited by
10References
13Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 15, 2002
Grant dateAug 10, 2004
Priority date—
Expiry dateNov 15, 2022

Classification

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

Abstract

A bandgap voltage reference circuit that utilize a two-stage transconductance amplifier as a feedback control loop to improve the accuracy and stability of the output reference voltage without the need for an additional biasing circuit. The high gain provides a good power-supply rejection ratio, and improves the circuit performance. The amplifier does not require a biasing circuit, thus saving valuable chip space. Furthermore, eliminating the need for a biasing circuit reduces the power consumption of the circuit.

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