Bandgap reference circuits

Details Bandgap reference circuits Bandgap reference circuits

2011-01-18

2011-01-18

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

C327S539000

Reexamination Certificate

active

07872462

ABSTRACT:
A bandgap reference circuit is provided. An input node receives a supply voltage. An output node provides a reference voltage. A first transistor is coupled between the input node and the output node and has a first control terminal. A resistor is coupled between the input node and the first control terminal. A second transistor is coupled to the first control terminal and has a second control terminal coupled to the output node. A third transistor is coupled between the second transistor and a ground terminal and has a third control terminal. A voltage dividing unit provides a first voltage and a second voltage according to the reference voltage. A differential amplifier provides a signal to the third control terminal according to a difference between the first and second voltages.

REFERENCES:
patent: 6046577 (2000-04-01), Rincon-Mora et al.
patent: 7737674 (2010-06-01), Erbito, Jr.
patent: 7821328 (2010-10-01), Hoque et al.
patent: 2010/0195358 (2010-08-01), Erbito, Jr.

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