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:
Oct. 06, 2020
Filed:
Aug. 19, 2019
Current-voltage convertor, reference voltage generator and non-volatile semiconductor storage device
Powerchip Semiconductor Manufacturing Corporation, Hsinchu, TW;
Tomofumi Kitani, Tokyo, JP;
Powerchip Semiconductor Manufacturing Corporation, Hsinchu, TW;
Abstract
A stable reference voltage that can be supplied in a layout area smaller than prior art is provided. A current-voltage convertor includes a first current mirror circuit including a first MOS transistor, a second MOS transistor in a pair, and an output resistor; and a depletion type N-channel MOS transistor, inserted between a first voltage to be input and the first MOS transistor and the second MOS transistor, and having a gate to which an output voltage from the output resistor is fed back. When a reference current is input to the first MOS transistor, the output voltage is generated by a current corresponding to the reference current flowing into the second MOS transistor and the output resistor. In addition, a reference voltage generator including the current-voltage convertor is provided to output a reference voltage based on the output voltage of the current-voltage convertor.