Bandgap reference circuit

Details Bandgap reference circuit Bandgap reference circuit

2007-07-23

2009-11-17

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

C323S314000

Reexamination Certificate

active

07619401

ABSTRACT:
A bandgap reference circuit having a low sensitivity to temperature and supplied voltage installs a compensation circuit on a bandgap reference circuit to substitute a prior art that uses a resistor to match the circuit startup purpose and solve the problem of startup error caused by the manufacturing error. The bandgap reference circuit includes a first amplifier, a second amplifier, and a reference circuit having a plurality of transistors and a plurality of bipolar junction transistors, and the bandgap reference circuit is electrically connected to a same supplied power of which the reference circuit is electrically connected and also includes a plurality of transistors and a compensation circuit of the second amplifier, so as to output a stable startup voltage which has a low sensitivity to the change of temperature and the change of supplied voltage.

REFERENCES:
patent: 6191644 (2001-02-01), Srinath et al.
patent: 6242897 (2001-06-01), Savage et al.
patent: 6531857 (2003-03-01), Ju
patent: 6788041 (2004-09-01), Gheorghe et al.
patent: 7071767 (2006-07-01), Ou-yang et al.
patent: 7253597 (2007-08-01), Brokaw

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