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:
Sep. 16, 2014
Filed:
Feb. 21, 2013
Mohammad Nizam Kabir, Tempe, AZ (US);
Brandt Braswell, Chandler, AZ (US);
Rakesh Shiwale, Chandler, AZ (US);
Mohammad Nizam Kabir, Tempe, AZ (US);
Brandt Braswell, Chandler, AZ (US);
Rakesh Shiwale, Chandler, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A quantizer includes a voltage reference network and a set of comparators coupled with the voltage reference network. The voltage reference network generates a plurality of reference voltages. Each of the comparators receives an input signal and produces a sequence of digital samples. The set of comparators includes first, second, and third subsets of comparators. Each comparator of the first subset includes a switched capacitor stage, each comparator of the second subset includes a preamplifier stage, and each comparator of the third subset includes a switched capacitor stage. The first and third subsets of comparators compares the input signal with reference voltages corresponding to the upper and lower voltage ranges of the input signal, and the second subset of comparators compares the input signal with reference voltages corresponding to the middle voltage range of the input signal.