Semiconductor integrated circuit device controlling the threshol

Details Semiconductor integrated circuit device controlling the threshol Semiconductor integrated circuit device controlling the threshol

1997-03-27

2000-09-26

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327537, H01L 2704

Patent

active

061247529

ABSTRACT:
The disclosed semiconductor integrated circuit device can control the threshold thereof without adding any other supply voltages except a drive supply voltage and a ground supply voltage. The semiconductor integrated circuit device comprises: a substrate potential generating circuit operative on the basis of a control signal, for deepening a substrate bias by pumping out charges from a semiconductor substrate when activated, but for setting an output thereof to a high impedance when deactivated; and a switch circuit operative on the basis of the control signal and turned on when the substrate potential generating circuit is deactivated, to set potential of the semiconductor substrate to a supply potential, but turned off when the substrate potential generating circuit is activated.

REFERENCES:
patent: 4961007 (1990-10-01), Kumanoya et al.
patent: 5057704 (1991-10-01), Koyanagi et al.
patent: 5280455 (1994-01-01), Kanaishi
patent: 5461338 (1995-10-01), Hirayama et al.
patent: 5557231 (1996-09-01), Yamaguchi et al.
patent: 5703522 (1997-12-01), Arimoto et al.

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