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. 23, 2025
Filed:
Feb. 16, 2024
Applicant:
Realtek Semiconductor Corp., Hsinchu, TW;
Inventor:
Wen-Tze Chen, Hsinchu, TW;
Assignee:
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/12 (2006.01); H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
H03M 3/494 (2013.01);
Abstract
A zoom analog-to-digital conversion circuit includes a successive approximation register analog-to-digital converter (SAR ADC), a sigma-delta modulator, and a switch circuit. The SAR ADC includes a comparator and a dummy capacitor. A first connection terminal of the dummy capacitor is coupled to an input port of the comparator. The sigma-delta modulator includes an integrator, a quantizer, and an adder. The adder is coupled between the integrator and the quantizer. The switch circuit is configured to selectively couple a second connection terminal of the dummy capacitor to a common mode potential or the adder.