On-chip substrate voltage generator
- IBM
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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Description
Patent History
Patent number: T954006
Type: Grant
Filed: Apr 2, 1976
Date of Patent: Jan 4, 1977
Assignee: International Business Machines (Armonk, NY)
Inventors: James M. Lee (Wappingers Falls, NY), George Sonoda (Poughkeepsie, NY)
Application Number: 5/672,898
Type: Grant
Filed: Apr 2, 1976
Date of Patent: Jan 4, 1977
Assignee: International Business Machines (Armonk, NY)
Inventors: James M. Lee (Wappingers Falls, NY), George Sonoda (Poughkeepsie, NY)
Application Number: 5/672,898
Classifications
Current U.S. Class:
307/304;
357/41;
Ring Oscillators (331/57)
International Classification: H03K 3353;
International Classification: H03K 3353;
