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:
Dec. 30, 2025
Filed:
Nov. 30, 2023
Upbeat Technology Co., Ltd, New Taipei, TW;
Ncku Research & Development Foundation, Tainan, TW;
Chung-Chieh Chen, New Taipei, TW;
Shuo-Hong Hung, New Taipei, TW;
Kai-Cheng Cheng, Tainan, TW;
Soon-Jyh Chang, Tainan, TW;
UPBEAT TECHNOLOGY CO., LTD, New Taipei, TW;
NCKU RESEARCH & DEVELOPMENT FOUNDATION, Tainan, TW;
Abstract
A Successive Approximation Register Analog-to-Digital Converter (SAR ADC) comprises: a plurality of switch capacitor arrays, used to sample an analog input signal; a noise shaping circuit including a fourth-order CIFF (Cascade of Integrators with Feed-Forward) loop filter having two second-order cascaded CIFF loop filters, in the fourth-order CIFF loop filter, a first-order extraction capacitor and a second-order extraction capacitor sharing a first amplifier, and a third-order extraction capacitor and a fourth-order extraction capacitor sharing a second amplifier; a comparator for comparing a plurality of output signals from the noise shaping circuit to produce a plurality of comparison results; and a logic circuit for generating a digital output signal and controlling the switch capacitor arrays based on comparison results from the comparator.