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. 24, 2015
Filed:
Jan. 08, 2015
Maxlinear, Inc., Carlsbad, CA (US);
Yongjian Tang, Carlsbad, CA (US);
Hao Liu, Carlsbad, CA (US);
Maxlinear, Inc., Carlsbad, CA (US);
Abstract
Methods and systems for an analog-to-digital converter with near-constant common mode voltage may comprise, in an analog-to-digital converter (ADC) having sampling switches on each of two input lines to the ADC, N double-sided and M single-sided switched capacitors on each input line: sampling an input voltage by closing the sampling switches, opening the sampling switches and comparing voltage levels between the input lines, iteratively switching the double-sided switched capacitors between a reference voltage (Vref) and ground, and iteratively switching the single-sided switched capacitors between ground and voltages that may equal Vref/2where x ranges from 0 to m−1 and m is a number of single-sided switched capacitors per input line. A common mode offset of the ADC may be less than V/128 +V/256+V/512+V/1024 when m equals 4 and where Vis the full-scale voltage of the ADC.