公开(公告)号：US08994572B2

公开(公告)日：2015-03-31

申请号：US14346260

申请日：2012-09-06

申请人： Hao San ,  Tsubasa Maruyama ,  Masao Hotta

发明人： Hao San ,  Tsubasa Maruyama ,  Masao Hotta

IPC分类号： H03M1/34 ,  H03M1/14 ,  H03M1/06 ,  H03M1/12 ,  H03M1/40

CPC分类号： H03M1/14 ,  H03M1/0609 ,  H03M1/0692 ,  H03M1/0695 ,  H03M1/1014 ,  H03M1/1205 ,  H03M1/40 ,  H03M1/403 ,  H03M1/442

摘要： The objective of the invention is to provide an A/D converter that exhibits fewer malfunctions due to variations in manufacturing. An A/D converter (1) of the invention, which is a cyclic type of analog/digital converter for converting an analog input signal to a digital signal having a predetermined resolution, comprises: a digital approximation unit (10) that includes a comparing unit (13) for comparing the magnitude of an input first analog signal with a threshold value to output a digital value indicating a result of the comparison and that also includes an MDAC unit (14) for amplifying the first analog signal to β-fold, where β is greater than one but smaller than two, and for executing a predetermined computation in accordance with the result of the comparison of the comparing unit to output a second analog signal; a multiplexer (20) that, if the MSB is to be computed, outputs the analog input signal and, otherwise, outputs the second analog signal as the first analog signal; a β estimating unit (30) that estimates the value of β; and a digital signal outputting unit (40) that sequentially takes in digital values outputted by the comparing unit and that outputs the taken-in digital values as the digital signal.

摘要翻译： 本发明的目的是提供一种A / D转换器，其由于制造变化而表现出较少的故障。 本发明的A / D转换器（1）是用于将模拟输入信号转换为具有预定分辨率的数字信号的循环型模拟/数字转换器，包括：数字近似单元（10），包括比较 单元（13），用于将输入的第一模拟信号的幅度与阈值进行比较，以输出指示比较结果的数字值，并且还包括用于将第一模拟信号放大到＆bgr;折叠的MDAC单元（14） ，其中＆bgr 大于1但小于2，并且用于根据比较单元的比较结果执行预定的计算以输出第二模拟信号; 多路复用器（20），如果要计算MSB，则输出模拟输入信号，否则输出第二模拟信号作为第一模拟信号; 一个 估计单位（30）估计值 以及数字信号输出单元（40），其顺序地取入由比较单元输出的数字值，并将所接收的数字值作为数字信号输出。

公开(公告)号：US20140300500A1

公开(公告)日：2014-10-09

申请号：US14346260

申请日：2012-09-06

申请人： Hao San ,  Tsubasa Maruyama ,  Masao Hotta

发明人： Hao San ,  Tsubasa Maruyama ,  Masao Hotta

IPC分类号： H03M1/14 ,  H03M1/12

CPC分类号： H03M1/14 ,  H03M1/0609 ,  H03M1/0692 ,  H03M1/0695 ,  H03M1/1014 ,  H03M1/1205 ,  H03M1/40 ,  H03M1/403 ,  H03M1/442

摘要： The objective of the invention is to provide an A/D converter that exhibits fewer malfunctions due to variations in manufacturing. An A/D converter (1) of the invention, which is a cyclic type of analog/digital converter for converting an analog input signal to a digital signal having a predetermined resolution, comprises: a digital approximation unit (10) that includes a comparing unit (13) for comparing the magnitude of an input first analog signal with a threshold value to output a digital value indicating a result of the comparison and that also includes an MDAC unit (14) for amplifying the first analog signal to β-fold, where β is greater than one but smaller than two, and for executing a predetermined computation in accordance with the result of the comparison of the comparing unit to output a second analog signal; a multiplexer (20) that, if the MSB is to be computed, outputs the analog input signal and, otherwise, outputs the second analog signal as the first analog signal; a β estimating unit (30) that estimates the value of β; and a digital signal outputting unit (40) that sequentially takes in digital values outputted by the comparing unit and that outputs the taken-in digital values as the digital signal.

摘要翻译： 本发明的目的是提供一种A / D转换器，其由于制造变化而表现出较少的故障。 本发明的A / D转换器（1）是用于将模拟输入信号转换为具有预定分辨率的数字信号的循环型模拟/数字转换器，包括：数字近似单元（10），包括比较 单元（13），用于将输入的第一模拟信号的幅度与阈值进行比较，以输出指示比较结果的数字值，并且还包括用于将第一模拟信号放大到＆bgr;折叠的MDAC单元（14） ，其中＆bgr 大于1但小于2，并且用于根据比较单元的比较结果执行预定的计算以输出第二模拟信号; 多路复用器（20），如果要计算MSB，则输出模拟输入信号，否则输出第二模拟信号作为第一模拟信号; 一个 估计单位（30）估计值 以及数字信号输出单元（40），其顺序地取入由比较单元输出的数字值，并将所接收的数字值作为数字信号输出。