Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1998-11-04
2000-10-24
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, 327543, 323312, 323315, H03L 500
Patent
active
061373478
ABSTRACT:
A mid supply reference generator (100, 200, 300) has a first resistance element (106, 206) coupled to a first supply. A second resistance element (108, 208) is coupled to a second supply. A third resistance element (110, 210) is coupled to the second supply A first transistor element (116, 216) is coupled to the first resistance element and the second resistance element, the first transistor element coupled between the first and second resistance element such that the first and second resistance elements provide a reference voltage drop from the same current level. A second transistor element is (120, 220) coupled between the first supply and the mid supply output, the second transistor element to drive the output providing a desired mid supply potential. A third transistor element (118,218) is coupled to the mid supply output and to the third resistance element, the third transistor element and the first transistor element being connected such that they generate proportional currents.
REFERENCES:
patent: 4837496 (1989-06-01), Erdi
patent: 5625282 (1997-04-01), Kawahara
patent: 5719522 (1998-02-01), Saitou et al.
patent: 5831473 (1998-11-01), Ishii
patent: 5926062 (1999-07-01), Kuroda
patent: 5945873 (1999-08-01), Antone et al.
Callahan Timothy P.
Luu An T.
Motorola, Ltd.
Soldner Michael C.
Vaas Randall S.
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