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:
Jul. 02, 2013
Filed:
Dec. 01, 2011
Shinichi Iizuka, Gyunggi-do, KR;
Jun Kyung NA, Gyunggi-do, KR;
Sang Hoon Ha, Gyunggi-do, KR;
Youn Suk Kim, Gyunggi-do, KR;
Shinichi Iizuka, Gyunggi-do, KR;
Jun Kyung Na, Gyunggi-do, KR;
Sang Hoon Ha, Gyunggi-do, KR;
Youn Suk Kim, Gyunggi-do, KR;
Samsung Electro-Mechanics Co., Ltd, Gyunggi-Do, KR;
Abstract
Provided is a voltage level shifter changing an input voltage level and outputting the input voltage. There is provided the voltage level shifter, including: an operational amplifier having a first input having an applied input voltage thereto; a first MOSFET having a gate connected to an output of the operational amplifier, a source having an applied power thereto, and a drain outputting an output voltage; a voltage dividing resistor unit including a plurality of voltage dividing resistors sequentially connected to the drain of the first MOSFET in series, one connection node between the plurality of voltage dividing resistors being connected to the second input of the operational amplifier; and a second MOSFET having a source and a drain, respectively connected to both ends of at least one of the voltage dividing resistors, and a gate connected to the gate of the first MOSFET.