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:
Jan. 03, 2017
Filed:
Feb. 19, 2016
Stichting Imec Nederland, Eindhoven, NL;
Pieter Harpe, Eindhoven, NL;
Stichting IMEC Nederland, Eindhoven, NL;
Abstract
A method includes sampling an input voltage signal applied to an ADC, comparing the sampled input voltage signal with an output signal of a feedback DAC, and determining in a search logic block a digital code representation for the comparison result. The method may also include performing a calibration by: performing an additional cycle, wherein a last comparison carried out for determining a least significant bit of the digital code representation is repeated with a second comparator resolution mode different from a first comparator resolution mode, so obtaining an additional comparison; determining from a difference between results of the additional comparison and the last comparison a sign of a comparator offset error between the comparator resolution modes; and tuning, in accordance with a sign of the comparator offset error, a programmable capacitor connected at an input of the comparator, thereby inducing a voltage step to counteract the comparator offset error.