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. 15, 2022
Filed:
Aug. 10, 2021
Nxp B.v., Eindhoven, NL;
Robert van Veldhoven, Valkenswaard, NL;
NXP B.V., Eindhoven, NL;
Abstract
A passive sigma-delta modulator including first modulator loop, a second modulator loop, and a digital combiner providing an output signal. The first modulator loop includes a first quantizer, a first passive summing junction, a first continuous-time passive analog loop filter, and a first feedback path. The second modulator loop includes a second quantizer, analog transfer circuitry, a second continuous-time passive summing junction, a second passive analog loop filter, a second feedback path, and digital transfer circuitry having a gain that is substantially a reciprocal of the analog transfer circuitry. A digital noise cancelation filter may be located between the first quantizer and the digital combiner, or an analog noise cancelation filter may be provided within the second modulator loop. Single-ended or differential configurations are contemplated.