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:
Jul. 28, 2020
Filed:
Jul. 23, 2019
Realtek Semiconductor Corporation, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
This invention discloses a successive approximation register analog-to-digital converter (SAR ADC) and a control circuit thereof. The SAR ADC includes a comparator, a switched-capacitor digital-to-analog converter (DAC), and a control circuit. The switched-capacitor DAC includes a capacitor and a driving circuit that is electrically connected to the capacitor. The driving circuit comprises a P-type MOSFET and an N-type MOSFET, and the gates of the two MOSFETs are not electrically connected. The P-type MOSFET is controlled by a first control signal, and the N-type MOSFET is controlled by a second control signal. The control circuit controls the voltage at one end of the capacitor to switch from a high voltage level to a low voltage level by controlling the rising edge of the first control signal to lead the rising edge of the second control signal.