Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-11-16
2009-12-15
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S538000, C327S543000, C323S313000
Reexamination Certificate
active
07633333
ABSTRACT:
A system includes a bandgap reference voltage circuit, a plurality of trimming resistors, a plurality of trimming switches to connect the bandgap reference voltage circuit to one or more of the plurality of trimming resistors, and an output terminal to connect to at least one of the bandgap reference voltage circuit and the plurality of trimming resistors. The system may provide a trimmed reference voltage independent of at least one of the resistance of any of the plurality of trimming switches and the voltage across any of the plurality of trimming switches.
REFERENCES:
patent: 4673866 (1987-06-01), Masuda
patent: 5773967 (1998-06-01), Tenten
patent: 6147908 (2000-11-01), Abugharbieh et al.
patent: 6859156 (2005-02-01), May et al.
patent: 6956413 (2005-10-01), Bailey
patent: 7215183 (2007-05-01), Nakada
patent: 2005/0127987 (2005-06-01), Sato et al.
patent: 2005/0285666 (2005-12-01), Garlapati et al.
patent: 2007/0182477 (2007-08-01), Kim
patent: 2007/0296392 (2007-12-01), Chen et al.
patent: 44 39 707 (1996-05-01), None
Banba, H.; Shiga, H.; Umezawa, A.; Miyaba, T.; Tanzawa, T.; Atsumi, S.; Sakui, K., “A CMOS bandgap reference circuit with sub-1-V operation,” Solid-State Circuits, IEEE Journal of, vol. 34, No. 5, pp. 670-674, May 1999.
Widlar, R., “New Developments in IC Voltage Regulators,” IEEE Journal of Solid-State Circuits, vol. SC-6, No. 1, Feb. 1971, pp. 2-7.
Kuijk, K., “A Precision Reference Voltage Source,” IEEE Journal of Solid-State Circuits, vol. SC-8, No. 3, Jun. 1973, pp. 222-226.
Banba, H., et al “A CMOS Bandgap Reference Circuit with Sub-1-V Operation,” IEEE Journal of Solid-State Circuits, vol. 34, No. 5, May 1999, pp. 670-674.
Donovan Lincoln
Infineon - Technologies AG
Poos John W
Slater & Matsil L.L.P.
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