Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1994-12-19
1995-12-12
Cunningham, Terry
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327538, 327541, 327546, G05F 302
Patent
active
054753368
ABSTRACT:
A small and easy to fabricate programmable current source correction circuit. The correction circuit consists of a first current division circuit for establishing a reference current; a programmable correction current circuit for establishing the amount of correction current required; a second current division circuit for further reducing the reference current into smaller step or resolution; and a source-sink controlling circuit for determining whether the present invention is to operate as a current sink or current source. The present invention consists of substantially less number of circuit modules and can be fully integrated into a single chip which requires substantially smaller chip area and can operates at a substantially higher frequency compared to prior art.
REFERENCES:
patent: 4954769 (1990-09-01), Kalthoff
patent: 4996453 (1991-02-01), Zanders et al.
patent: 4999516 (1991-03-01), Suter et al.
patent: 5061862 (1991-10-01), Tamagawa
patent: 5235222 (1993-08-01), Kondoh et al.
patent: 5254883 (1993-10-01), Horowitz et al.
patent: 5339272 (1994-08-01), Tedrow et al.
Bhatt Ansuya P.
Singh Raminder J.
Tan Khen S.
Cunningham Terry
Ho Lawrence Y. D.
Institute of Microelectronics National University of Singapore
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