Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
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
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.
Previous page
Next page
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5592010 *Nov 22, 1994Jan 7, 1997Kabushiki Kaisha ToshibaSemiconductor device
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