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. 11, 2016
Filed:
Jun. 27, 2014
Qualcomm Incorporated, San Diego, CA (US);
Burt Lee Price, Apex, NC (US);
Dhaval Rajeshbhai Shah, Raleigh, NC (US);
Yeshwant Nagaraj Kolla, Wake Forest, NC (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Phase-dependent operational amplifiers ('op-amps') employing phase-based frequency compensation, and related systems and methods are disclosed. A phase-dependent op-amp is provided configured to provide output voltage based on inputs switched by clock signal. The op-amp employs a frequency compensation system having multiple frequency compensation circuits. The frequency compensation circuit corresponding to the clock phase is selected by selection circuit and coupled to the voltage output node. The op-amp charges each frequency compensation circuit during the clock phase to store voltage approximately equal to output voltage. When transitioning to a clock phase, output voltage of op-amp does not have to charge frequency compensation circuit. Voltage of frequency compensation circuit stored during clock phase is approximately equal to output voltage of op-amp for clock phase. The op-amp need only provide a small amount of voltage to the frequency compensation circuit to slew it to its designed voltage during instances of its clock phase.