Integrated circuit having controller impedances and application

Details Integrated circuit having controller impedances and application Integrated circuit having controller impedances and application

1994-05-13

1995-03-14

Chin, Stephen

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333 32, 333 173, 327524, 327564, H04L 2500

Patent

active

053982614

ABSTRACT:
The invention relates to an integrated circuit including impedances having precise values. To compensate for process variations and drift in impedances, the circuit includes automatic control means (3) to adjust the value of impedances (R) to a value that is a function of that of a reference impedance (Rc) external to the integrated circuit.

REFERENCES:
patent: 3700831 (1972-10-01), Aagaard et al.
patent: 3909559 (1975-09-01), Taylor
patent: 4549049 (1985-10-01), Guidoux
patent: 4588856 (1986-05-01), Cohen
patent: 4682176 (1987-07-01), Jones
patent: 4719369 (1988-01-01), Asano et l.
patent: 4965607 (1990-10-01), Wilkins et al.
patent: 5057783 (1991-10-01), Gubisch
Patent Abstracts of Japan; vol. 7, No. 280, Dec. 1983.
Patent Abstract of Japan JP 59 159 406, vol. 9, No. 47, Feb. 27, 1985.

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