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:
Mar. 11, 2025
Filed:
Mar. 28, 2023
United Microelectronics Corp., Hsinchu, TW;
Po-Hua Chen, Changhua County, TW;
Yu-Yee Liow, Hsinchu County, TW;
Chih-Wei Wu, Kaohsiung, TW;
Wen-Hong Hsu, Hsinchu, TW;
Hsuan-Chih Yeh, New Taipei, TW;
Pei-Wen Sun, Hsinchu County, TW;
UNITED MICROELECTRONICS CORP., Hsinchu, TW;
Abstract
A SAR ADC includes: a sample-hold (S/H) circuit sampling an input voltage to generate a S/H output signal; a DAC generating a DAC output signal; a comparator comparing the DAC output signal with the S/H output signal to generate a comparison output signal; a SAR combinational digital circuit group; a multiplexer circuit; and a plurality of registers for registering the comparison output signal as register output signals and outputting as an output signal of the SAR ADC. The SAR combinational digital circuit group generates a plurality of first and second SAR output signals based on the register output signals. The multiplexer circuit is controlled by on the register output signals to select among the first and the second SAR output signals as a plurality of multiplexer output signals for sending to the DAC. A capacitor coupling relationship of the DAC is controlled by the multiplexer output signals.