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:
May. 22, 2012
Filed:
Nov. 24, 2010
Sriram Narayan, Pleasanton, CA (US);
Xiaoyan Su, San Jose, CA (US);
Sergey Shumarayev, Los Altos Hills, CA (US);
Sriram Narayan, Pleasanton, CA (US);
Xiaoyan Su, San Jose, CA (US);
Sergey Shumarayev, Los Altos Hills, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
One embodiment relates to a continuous-time circuit configured with an offset cancellation loop. The continuous-time circuit includes a multi-stage amplifier chain, including a first amplifier stage and a last amplifier stage, and an offset cancellation loop. The offset cancellation loop is configured to receive an output of the last amplifier stage and to provide an offset correction voltage signal to the first amplifier stage. The offset compensation loop may create one dominant pole and a single consequential parasitic pole so as to have greater stability and may advantageously achieve a second-order roll-off in response magnitude at higher frequencies. Other embodiments, aspects, and features are also disclosed.