公开(公告)号：US20080012744A1

公开(公告)日：2008-01-17

申请号：US11825027

申请日：2007-07-03

Applicant: Christopher Hurrell

Inventor： Christopher Hurrell

IPC: H03M1/12

CPC classification number: H03M1/002 ,  H03K17/04123 ,  H03K17/162 ,  H03K17/6872 ,  H03K19/0013 ,  H03M1/0863 ,  H03M1/462 ,  H03M1/466 ,  H03M1/468 ,  H03M1/804

Abstract: A successive approximation analog to digital converter comprising a plurality of capacitors which during a successive approximation conversion are selectively connectable to a first reference or a second reference under the command of a controller, wherein during a conversion step where the connections of a given capacitor may be varied the switches to the given capacitor are both placed in a high impedance state during a decision period of a comparator.

Abstract translation: 包括多个电容器的逐次逼近模数转换器，其在逐次逼近转换期间可在控制器的命令下选择性地连接到第一参考或第二参考，其中在转换步骤期间，给定电容器的连接可以是 在比较器的判定周期期间将开关变化到给定电容器都被置于高阻抗状态。

公开(公告)号：US20070109168A1

公开(公告)日：2007-05-17

申请号：US11273196

申请日：2005-11-14

Applicant: Michael Hennessy ,  Christopher Hurrell ,  Colin Lyden

Inventor： Michael Hennessy ,  Christopher Hurrell ,  Colin Lyden

IPC: H03M1/12

CPC classification number: H03M1/0639 ,  H03M1/468

Abstract: An analog to digital converter is provided comprising an array of capacitors for sampling an input, each capacitor having at least one associated switch for controllably connecting a terminal of the capacitor to a first reference voltage or to a second reference voltage; and a sequence generator for generating a sequence of bits, wherein during sampling of the input onto the array of capacitors an output of the sequence generator is supplied to the switches of a first group of capacitors to control whether a given capacitor within the first group is connected by its associated switch to the first reference voltage or to the second reference voltage.

Abstract translation: 提供了一种模数转换器，包括用于对输入进行采样的电容器阵列，每个电容器具有至少一个相关联的开关，用于将电容器的端子可控地连接到第一参考电压或第二参考电压; 以及用于产生位序列的序列发生器，其中在对所述电容器阵列的输入进行采样期间，所述序列发生器的输出被提供给第一组电容器的开关，以控制所述第一组内的给定电容器是否为 通过其相关联的开关连接到第一参考电压或第二参考电压。

公开(公告)号：US20060208937A1

公开(公告)日：2006-09-21

申请号：US11374233

申请日：2006-03-13

Applicant: Christopher Hurrell ,  Colin Price

Inventor： Christopher Hurrell ,  Colin Price

IPC: H03M1/12

CPC classification number: H03M1/144 ,  H03M1/0643 ,  H03M1/0678 ,  H03M1/0695 ,  H03M1/1019 ,  H03M1/46

Abstract: An analog to digital converter comprising at least two analog to digital conversion engines and a controller for controlling the operation of the analog to digital conversion engines such that during a first phase of an analog to digital conversion process the engines collaborate such that a plurality of bits can be determined during a single trial step; and during a second phase of the analog to digital conversion the conversion engines work independently; and the controller receives the outputs of at least one of the conversion engines and processes them to provide an output word.

Abstract translation: 一种模数转换器，包括至少两个模数转换引擎和用于控制模数转换引擎的操作的控制器，使得在模数转换过程的第一阶段期间，引擎协作使得多个位 可以在单个试用阶段确定; 并且在模数转换的第二阶段期间，转换引擎独立工作; 并且控制器接收至少一个转换引擎的输出并处理它们以提供输出字。

公开(公告)号：US20070132626A1

公开(公告)日：2007-06-14

申请号：US11634053

申请日：2006-12-05

Applicant: Christopher Hurrell

Inventor： Christopher Hurrell

IPC: H03M1/12

CPC classification number: H03M1/1047 ,  H03M1/468 ,  H03M1/68 ,  H03M1/804

Abstract: An analog to digital converter having improved differential non-linearity is provided. The converter has a memory which is used to look up the actual weight or a weight error corresponding to the bits that have been kept as part of the SAR process to form an output correction value A part of this, for example a residue (the part following the decimal point in a decimal representation) is used to drive a correction DAC which causes a correction to be applied to the trial value presented to a comparator used by the ADC.

Abstract translation: 提供了具有改进的差分非线性的模数转换器。 该转换器具有用于查找与作为SAR处理的一部分保持的比特相对应的实际权重或重量误差的存储器，以形成输出校正值A的一部分，例如残差（部分 遵循十进制表示中的小数点后）用于驱动校正DAC，其导致将校正应用于呈现给ADC使用的比较器的试用值。

公开(公告)号：US20070035431A1

公开(公告)日：2007-02-15

申请号：US11266071

申请日：2005-11-03

Applicant: Christopher Hurrell ,  Gary Carreau

Inventor： Christopher Hurrell ,  Gary Carreau

IPC: H03M1/12

CPC classification number: H03M1/0697 ,  H03M1/468

Abstract: A method of operating a digital to analog converter comprising the steps of operating the converter in a first mode to obtain a first conversion result, operating the converter in a correction mode in which one or more correction conversions are made, and wherein each correction conversion takes the result of a preceding result as a valid starting point.

Abstract translation: 一种操作数模转换器的方法，包括以第一模式操作转换器以获得第一转换结果的步骤，在进行一次或多次校正转换的校正模式下操作转换器，并且其中每个校正转换采取 作为有效起点的前一结果的结果。

公开(公告)号：US20060208935A1

公开(公告)日：2006-09-21

申请号：US11273220

申请日：2005-11-14

Applicant: Christopher Hurrell ,  Colin Lyden

Inventor： Christopher Hurrell ,  Colin Lyden

IPC: H03M1/12

CPC classification number: H03M1/145 ,  H03M1/144 ,  H03M1/468

Abstract: A analog to digital converter, comprising: an input for receiving an input signal to be digitised; a first converter core for performing a first part of an analog to digital conversion, and for outputting a first digital result; a first residue calculator for calculating a first residue as a difference between the input signal and the first digital result; a second converter core for performing a second part of the analog to digital conversion by converting the first residue; wherein at least one of the first and second converter cores comprises at least three analog to digital conversion engines and a controller for controlling the operation of the engines such that the engines collaborate to perform a successive approximation search, and wherein a plurality of bits can be determined during a single trial step of the successive approximation search.

Abstract translation: 一种模数转换器，包括：用于接收要被数字化的输入信号的输入; 用于执行模数转换的第一部分并用于输出第一数字结果的第一转换器核心; 第一残差计算器，用于计算第一残差作为输入信号和第一数字结果之间的差; 第二转换器核，用于通过转换第一残差来执行模数转换的第二部分; 其中所述第一和第二转换器核心中的至少一个包括至少三个模数转换引擎和用于控制引擎的操作的控制器，使得引擎协同执行逐次逼近搜索，并且其中多个位可以是 在逐次逼近搜索的单个试验步骤中确定。