The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2001
Filed:
Jan. 21, 2000
Applicant:
Inventors:
Mitsunori Tsujino, Hyogo, JP;
Yutaka Ikeda, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/20 ;
U.S. Cl.
CPC ...
G05F 3/20 ;
Abstract
In a circuit producing a reference voltage that is used in an internal circuit having an operation mode switched by utilizing a MOS transistor receiving a constant voltage on its gate, a signal changing in a direction controlling a voltage change caused on a gate node is applied to the gate or a drain of the MOS transistor receiving the constant voltage on the gate when the operation mode is switched. The constant voltage can be suppressed from varying through capacitive coupling of a parasitic capacitance of the constant voltage MOS transistor when the operation mode is switched, so that the reference voltage can be stably produced.