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:
Apr. 02, 2019
Filed:
May. 30, 2018
Postech Academy-industry Foundation, Pohang-si, KR;
Jae Yoon Sim, Pohang-si, KR;
Seungnam Choi, Hwasung-si, KR;
POSTECH ACADEMY-INDUSTRY FOUNDATION, Pohang-si, KR;
Abstract
The present invention relates to a successive approximation register (SAR)-type analog-digital converter (ADC), which can amplify a residual voltage without a non-linearity problem caused by an output voltage of a residual voltage amplifier, thereby performing high-resolution analog-digital conversion at low power consumption. The SAR-type ADC may include: a coarse/fine SAR conversion unit configured to receive an analog input voltage and convert the received voltage into an MSB digital signal in a coarse SAR conversion mode, and receive a feedback voltage and convert the received voltage into an LSB digital signal in a fine SAR conversion mode; and a residue integration unit configured to repeatedly amplify a residual voltage with a predetermined gain by a predetermined number of times and output the amplified voltage as a final target multiple, the residual voltage corresponding to a voltage difference between the analog input voltage and an analog voltage obtained by converting the digital signal into an analog signal.