Bandgap reference circuit

Details Bandgap reference circuit Bandgap reference circuit

2007-06-01

2010-11-16

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S316000

Reexamination Certificate

active

07834610

ABSTRACT:
A bandgap reference circuit includes a reference current generator for respectively generating a first reference current on a first current path and a second reference current on a second current path, a current mirror for generating a third reference current on a third current path based on the first and second reference currents, an operation amplifier for rendering the first reference current substantially identical to the second reference current and a feedback circuit for rendering a node voltage on the first current path substantially identical to another node voltage on the third current path, so as to eliminate possible errors caused by a channel length modulation effect in the current mirror.

REFERENCES:
patent: 5519310 (1996-05-01), Bartlett
patent: 5686823 (1997-11-01), Rapp
patent: 6046578 (2000-04-01), Feldtkeller
patent: 2005/0093531 (2005-05-01), Vorenkamp et al.
patent: 2007/0052404 (2007-03-01), Richardson
Article titled “A CMOS Bandgap reference Circuit with sub-1-V Operation” jointly authored by H. Banba et al. IEEE Journal of Solid-State Circuits, vol. 34,No. 5, pp. 670-674, May 1999.

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