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. 04, 2016
Filed:
May. 16, 2013
Applicant:
Maxim Integrated Products, Inc., San Jose, CA (US);
Inventors:
Luciano Prandi, Bellinzago Novarese, IT;
Carlo Caminada, Pregnana Milanese, IT;
Carlo Alberto Romani, Cornaredo, IT;
Assignee:
Maxim Integrated Products, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01); H03K 3/012 (2006.01); H03K 3/013 (2006.01);
U.S. Cl.
CPC ...
H03K 3/012 (2013.01); H03K 3/013 (2013.01);
Abstract
Various embodiments of the invention provide for cancellation of unwanted signals in switched-capacitor circuits. In certain embodiments cancellation this is accomplished by performing a multi-phase CDS technique. The technique comprises resetting capacitive elements in the feedback path of an operational amplifier during a reset interval, maintaining a decoupled condition during a sampling interval in which the unwanted signals are sampled, and cancelling unwanted signals in a sensing interval.