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. 23, 2025
Filed:
Jan. 13, 2023
Infinera Corporation, San Jose, CA (US);
Shiva Prasad Kotagiri, San Jose, CA (US);
Fu-Tai An, San Jose, CA (US);
Abstract
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing a SAR ADC circuit with improved quantization error. In some implementations, an apparatus includes an analog-to-digital converter (ADC) configured to receive a set of voltage signals and generate digital representations of signals. The ADC comprises a capacitive digital-to-analog converter (CDAC) comprising a capacitive divider circuit, the capacitive divider circuit comprising (i) a first capacitor in parallel with a second capacitor in a first branch, (ii) a plurality of capacitors in a plurality of other respective branches, and (iii) the CDAC configured to receive the set of sampled voltages and adjust each set of the sampled voltages by a first voltage or a second voltage through selection of one or more capacitors of the (i) first capacitor and the second capacitor and (ii) one or more of the plurality of capacitors.