Invention Application
- Patent Title: A/D CONVERTER CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT
-
Application No.: US15594753Application Date: 2017-05-15
-
Publication No.: US20170250697A1Publication Date: 2017-08-31
- Inventor: Keisuke KIMURA , Yuichi OKUDA , Hideo NAKANE , Takaya YAMAMOTO
- Applicant: RENESAS ELECTRONICS CORPORATION
- Priority: JP2013-272727 20131227
- Main IPC: H03M1/00
- IPC: H03M1/00 ; H03M1/10 ; H03M1/12 ; H03M1/06

Abstract:
An analog-to-digital converter circuit having a simple design and capable of preventing an increase in surface area and other problems. An analog-to-digital converter circuit for converting an analog input signal to a digital quantity includes an analog-to-digital converter unit that converts analog input signals to pre-correction digital values, and a corrector unit that digitally corrects the pre-connection digital values output from the analog-to-digital converter unit. The corrector unit includes a weighting coefficient multiplier unit that outputs a post-correction digital value obtained by multiplying the weighting coefficients provided for each bit by each bit of the pre-correction digital value output from the A/D converter unit and summing them, and a weighting coefficient search unit that searches for weighting coefficients so as to minimize an error signal generated based on the post-correction digital value and an approximate value for the post-correction digital value.
Public/Granted literature
- US10020814B2 A/D converter circuit and semiconductor integrated circuit Public/Granted day:2018-07-10
Information query