Current scaling in lateral PNP structures

Details Current scaling in lateral PNP structures Current scaling in lateral PNP structures

1975-06-05

1976-05-18

Wojciechowicz, Edward J.

357 40, 357 46, H01L 2972, H01L 2702

Patent

active

039582671

ABSTRACT:
Current scaling in a lateral transistor wherein a plurality of emitter-collector circuits are established, certain of said circuits having a different base width than certain other of said circuits. In one embodiment, separate transistors are formed, each with its own emitter and collector, each portion of each collector being spaced an equal distance from its associated emitter the base widths of the different transistors being different, such that, with the emitters coupled in common, different currents being dependent on the base width of the associated transistor. In a second embodiment, a common emitter is employed with the separate collectors formed as arcs about the emitter, the base widths between the emitter and the different collectors being different.

REFERENCES:
patent: 3173069 (1965-03-01), Stehney
patent: 3579059 (1971-05-01), Widlar
patent: 3633052 (1972-01-01), Hanna
IBM - Tech. Disc. Bull. - Vol. 14, No. 5, Oct. 1971 - Berger pp. 1422-1423. emitter, currents flow in the different emitter-collector circuits, said currents being

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