公开(公告)号：US10020814B2

公开(公告)日：2018-07-10

申请号：US15594753

申请日：2017-05-15

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Keisuke Kimura ,  Yuichi Okuda ,  Hideo Nakane ,  Takaya Yamamoto

IPC: H03M1/06 ,  H03M1/10 ,  H03M1/12 ,  H03M1/00

CPC classification number: H03M1/0634 ,  H03M1/002 ,  H03M1/0617 ,  H03M1/1009 ,  H03M1/12 ,  H03M1/1215 ,  H03M1/1225

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.

公开(公告)号：US09685968B2

公开(公告)日：2017-06-20

申请号：US15142273

申请日：2016-04-29

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Keisuke Kimura ,  Yuichi Okuda ,  Hideo Nakane ,  Takaya Yamamoto

IPC: H03M1/06 ,  H03M1/10 ,  H03M1/00 ,  H03M1/12

CPC classification number: H03M1/0634 ,  H03M1/002 ,  H03M1/0617 ,  H03M1/1009 ,  H03M1/12 ,  H03M1/1215 ,  H03M1/1225

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.

公开(公告)号：US09184755B2

公开(公告)日：2015-11-10

申请号：US14487179

申请日：2014-09-16

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Keisuke Kimura ,  Yuichi Okuda ,  Hideo Nakane ,  Takaya Yamamoto

IPC: H03M1/06 ,  H03M1/46

CPC classification number: H03M1/0607 ,  H01L23/5225 ,  H01L23/5226 ,  H01L23/528 ,  H01L27/0629 ,  H01L2924/0002 ,  H03M1/0604 ,  H03M1/1023 ,  H03M1/124 ,  H03M1/1245 ,  H03M1/442 ,  H03M1/46 ,  H03M1/462 ,  H03M1/468 ,  H01L2924/00

Abstract: A semiconductor device according to an aspect of the invention relates to an AD converter that converts a signal level of an analog signal into a digital value by using a comparator, and determines an amount of adjustment of an offset voltage of the comparator based on an offset determination result of the comparator obtained immediately after a least significant bit (LSB) of a digital value output as a conversion result is converted.

Abstract translation: 根据本发明的一个方面的半导体器件涉及通过使用比较器将模拟信号的信号电平转换为数字值的AD转换器，并且基于偏移来确定比较器的偏移电压的调整量 在作为转换结果的数字值输出的最低有效位（LSB）之后立即获得的比较器的确定结果被转换。

公开(公告)号：US20140333461A1

公开(公告)日：2014-11-13

申请号：US14445682

申请日：2014-07-29

Applicant: Renesas Electronics Corporation

Inventor： Keisuke Kimura ,  Yuichi Okuda ,  Hideo Nakane ,  Takaya Yamamoto ,  Tatsuji Matsuura

IPC: H03M3/00 ,  H03M1/20

CPC classification number: H03M3/49 ,  H03M1/201 ,  H03M3/328 ,  H03M3/332 ,  H03M3/43 ,  H03M3/438 ,  H03M3/486

Abstract: A semiconductor communication device reduces influence of noise that is produced by applying a dither signal. The semiconductor communication device includes a Delta-Sigma analog-to-digital converter that converts input analog signals to digital signals, a power detecting unit that detects signal power of the digital signals, a gain control unit that changes a gain setting of analog signals to be input to the Delta-Sigma analog-to-digital converter depending on the signal power of the digital signals, and a dither signal control unit that causes the Delta-Sigma analog-to-digital converter to selectively add the dither signal when the gain setting changes.

Abstract translation: 半导体通信设备减少通过应用抖动信号产生的噪声的影响。 该半导体通信装置包括将输入的模拟信号转换为数字信号的Delta-Sigma模数转换器，检测数字信号的信号功率的功率检测单元，将模拟信号的增益设定变更为 根据数字信号的信号功率输入到Delta-Sigma模数转换器;以及抖动信号控制单元，其使Delta-Sigma模数转换器在增益时选择性地添加抖动信号 设置更改。