Temperature independent CMOS reference voltage circuit for...

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2005-07-19

2005-07-19

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

C327S543000

Reexamination Certificate

active

06919753

ABSTRACT:
A temperature independent CMOS reference voltage circuit includes a CMOS current mirror circuit containing first and second CMOS transistors of a first polarity. A temperature compensation circuit is coupled to the CMOS current mirror circuit, and contains a first resistor, a second resistor, and third and fourth CMOS transistors of a second polarity. The third and fourth CMOS transistors are configured to operate substantially in a subthreshold region. One of the third and fourth CMOS transistors is diode connected.

REFERENCES:
patent: 5467052 (1995-11-01), Tsukada
patent: 5859560 (1999-01-01), Matthews
patent: 6150871 (2000-11-01), Yee
patent: 6348832 (2002-02-01), Chih
patent: 6724244 (2004-04-01), Wu
patent: 6737909 (2004-05-01), Jaussi et al.
patent: 6759893 (2004-07-01), Gailhard et al.

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