×

Bandgap Reference Circuits

  • US 20080157746A1
  • Filed: 12/29/2006
  • Published: 07/03/2008
  • Est. Priority Date: 12/29/2006
  • Status: Abandoned Application
First Claim
Patent Images

1. A bandgap reference circuit, comprising:

  • a voltage generation circuit comprising;

    a current mirror comprising at least one output terminal;

    an operational amplifier coupled to the current mirror;

    first and second BJT transistors coupled to two input terminals of the operational amplifier respectively, wherein at least one of the first and second BJT transistors is coupled to the output terminal of the current mirror through a conductive path; and

    a start-up circuit triggering the current mirror;

    wherein when powering on, the start-up circuit triggers the current mirror until at least one of the first and second BJT transistors operates in a forward-active region.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×