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:
Nov. 22, 2016
Filed:
Jan. 27, 2014
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Ming-Chieh Huang, San Jose, CA (US);
Chan-Hong Chern, Palo Alto, CA (US);
Tao Wen (David) Chung, San Jose, CA (US);
Tsung-Ching (Jim) Huang, San Jose, CA (US);
Chih-Chang Lin, San Jose, CA (US);
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Abstract
Some embodiments relate to a phase interpolator. The phase interpolator includes a control block to provide a plurality of phase interpolation control signals which are collectively indicative of a phase difference between a first clock and a second clock. The phase interpolation control signals define different phase step sizes by which the first clock is to be phase shifted to limit the phase difference. A plurality of Gilbert cells provide a plurality of current levels, respectively, based on the plurality of phase interpolation control signals. A plurality of current control elements adjust the plurality of current levels from the plurality of Gilbert cells. The plurality of current levels are adjusted by different amounts for the different phase step sizes.