Analog switch with reduced parasitic bipolar transistor...

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage

Reexamination Certificate

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Reexamination Certificate

active

07385433

ABSTRACT:
According to the invention a well-switching arrangement, with a semiconductor circuit including a switch having an input terminal, an output terminal and a body region and at least one comparator having a first input coupled to at least one of the terminals and a second input coupled to a positive voltage rail, and logic coupled to an output of the comparator and responsive to the output to selectively couple the body-well region to one of the terminals or to the positive voltage rail.

REFERENCES:
patent: 4994886 (1991-02-01), Nadd
patent: 5986947 (1999-11-01), Choi et al.
patent: 6163487 (2000-12-01), Ghilardelli
patent: 6218707 (2001-04-01), Soldavini
patent: 6424203 (2002-07-01), Bayadroun
patent: 6456150 (2002-09-01), Sacco et al.
patent: 6525594 (2003-02-01), Fugate et al.
patent: 7084697 (2006-08-01), Kawagoshi
Allen, Phillip E., et al., “CMOS Analog Circuit Design,” Holt, Rinehart & Winston, Fort Worth, 1987, p. 209.

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