Method and apparatus for compensating inherent non-uniformity of

Details Method and apparatus for compensating inherent non-uniformity of Method and apparatus for compensating inherent non-uniformity of

1990-12-11

1992-09-22

LaRoche, Eugene R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072966, 307362, H03F 130

Patent

active

051499940

ABSTRACT:
For use with an inverter including CMOS transistors, a device for compensating inherent variations in electrical properties among MOS integrated circuits, the device including a generator of a reference signal representing conduction of a reference transistor; two threshold amplifiers; two switches; and two compensating transistors. If, for example, a first transistor is weak, switches are employed to selectively activate one or more supplementary transistors to add a compensating current to a current furnished by the first transistor so as to provide a reliably uniform output current as compared with a plurality of other MOS integrated circuits.

REFERENCES:
patent: 4260946 (1981-04-01), Wheatley
patent: 4446444 (1984-05-01), Patterson, III
patent: 4616142 (1986-10-01), Upadhyay
patent: 4806875 (1989-02-01), Schaffer
patent: 4835417 (1989-05-01), Kousaka
patent: 4896059 (1990-01-01), Goodwin-Johansson
patent: 4906914 (1990-03-01), Ohsawa
patent: 4954728 (1990-09-01), Pavlin
patent: 5010338 (1991-04-01), Miki

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