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:
Dec. 05, 2017
Filed:
Apr. 01, 2014
Capital Microelectronics Co., Ltd., Beijing, CN;
Rifeng Mai, Beijing, CN;
Capital Microelectronics Co., Ltd., Beijing, CN;
Abstract
An integrated circuit chip includes at least one driver circuit of single-ended structure and the first drive circuit, the first drive circuit and the at least one driver circuit of single-ended structure have the same structure, the first drive circuit includes a plurality of parallel-connected PMOS tubes and a plurality of parallel-connected NMOS tubes, the plurality of parallel-connected PMOS tubes connect the plurality of parallel-connected NMOS tube in series at a first node. After impedance calibration has been conducted, the chip confines a first impedance calibration code and a second impedance calibration code, and controls the at least one driver according to the first impedance calibration code and the second impedance calibration code; the first reference voltage is preferably configured to ¾ times of the supply voltage V, and the second reference voltage is preferably configured to ¼ times of the supply voltage V.