Invention Grant
- Patent Title: Analog-to-digital converter
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Application No.: US17488646Application Date: 2021-09-29
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Publication No.: US11677407B2Publication Date: 2023-06-13
- Inventor: Hideki Hayashi
- Applicant: SANKEN ELECTRIC CO., LTD.
- Applicant Address: JP Niiza
- Assignee: SANKEN ELECTRIC CO., LTD.
- Current Assignee: SANKEN ELECTRIC CO., LTD.
- Current Assignee Address: JP Niiza
- Agency: Metrolex IP Law Group, PLLC
- Main IPC: H03M1/06
- IPC: H03M1/06 ; H03M1/10 ; H03M1/46

Abstract:
One or more embodiments of a successive approximation type analog-to-digital converter that converts an analog input into a digital conversion value and outputs the digital conversion value, may include: a capacitance DAC that generates a bit-by-bit potential based on an analog input; a comparator that compares the potential generated by the capacitance DAC, wherein the comparator is a memory cell rewriting type, the comparator includes a first stage current mirror type operational amplifier; and a second stage memory cell; a conversion data generator that generates conversion data of resolution bits based on a comparison result of the comparator; and a correction circuit that corrects an output error of the conversion data caused by an offset error of the comparator by adding or subtracting an offset correction value that is a fixed value, and outputs the conversion data as a digital conversion value.
Public/Granted literature
- US20220149853A1 ANALOG-TO-DIGITAL CONVERTER Public/Granted day:2022-05-12
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