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Publication numberUST954006 I4
Publication typeGrant
Application numberUS 05/672,898
Publication dateJan 4, 1977
Filing dateApr 2, 1976
Priority dateJun 29, 1973
Publication number05672898, 672898, US T954006 I4, US T954006I4, US-I4-T954006, UST954006 I4, UST954006I4
InventorsJames M. Lee, George Sonoda
Original AssigneeInternational Business Machines
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
On-chip substrate voltage generator
US T954006 I4
Abstract
disclosed is an apparatus for generating and controlling a desired substrate potential level or a semiconductor chip. A pulse source, such as an oscillator, provides a pulse train which, in combination with a control signal from the substrate voltage detector, selectively discharges a capacitor in a voltage level converter for obtaining a desired level of substrate potential. A feedback path through the substrate regulates the conductivity of a reference transistor in the substrate voltage detector providing the required control signal.
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5592010 *Nov 22, 1994Jan 7, 1997Kabushiki Kaisha ToshibaSemiconductor device
Classifications
U.S. Classification327/581, 331/57, 257/368
International ClassificationG05F3/20, H03L1/00, H03K17/14, H03K3/011
Cooperative ClassificationG05F3/205, H03L1/00, H03K17/145, H03K3/011
European ClassificationH03K3/011, G05F3/20S, H03L1/00, H03K17/14B