Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1996-04-02
1998-10-06
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327542, 327541, 323313, 323315, G05F 326
Patent
active
058182926
ABSTRACT:
According to the present invention, a circuit, utilizing a minimum number of bipolar devices and current mirror scaling devices, generates a bandgap reference voltage. The bandgap voltage generated by the bandgap reference circuit is a function of a plurality of sized current mirror devices, the ratio of a first resistor to a second resistor, and the number and relative sizing of bipolar junction transistors used. The bandgap reference circuit generates a bandgap reference voltage which is suitable for use in a variety of integrated circuit devices, such as a zero power static random access memory (SRAM). If used in a zero power SRAM application, the bandgap reference voltage may be utilized to determine when the primary power source of the zero power SRAM has fallen below a predetermined voltage level and a secondary power source must be substituted for the primary power source.
REFERENCES:
patent: 4447784 (1984-05-01), Dobkin
patent: 4792750 (1988-12-01), Yan
patent: 4839535 (1989-06-01), Miller
patent: 4897595 (1990-01-01), Holle
patent: 4935690 (1990-06-01), Yan
patent: 5029295 (1991-07-01), Bennet et al.
patent: 5120994 (1992-06-01), Joly
patent: 5307007 (1994-04-01), Wu et al.
patent: 5619163 (1997-04-01), Koo
A High-Performance CMOS 70-MHz Palette/DAC, Letham et al., Journal of Solid-State Circuit, vol. sc-22, No. 6, Dec. 1987, pp. 1041-1047.
Callahan Timothy P.
Englund Terry L.
Galanthay Theodore E.
Jorgenson Lisa K.
Larson Renee M.
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