STATISTICAL ESTIMATION-BASED NOISE REDUCTION TECHNIQUE FOR LOW POWER SUCCESSIVE APPROXIMATION REGISTER ANALOG-TO-DIGITAL CONVERTERS
    1.
    发明申请
    STATISTICAL ESTIMATION-BASED NOISE REDUCTION TECHNIQUE FOR LOW POWER SUCCESSIVE APPROXIMATION REGISTER ANALOG-TO-DIGITAL CONVERTERS 审中-公开
    用于低功率随机逼近的基于统计估计的噪声减少技术寄存器模拟到数字转换器

    公开(公告)号:WO2017058874A1

    公开(公告)日:2017-04-06

    申请号:PCT/US2016/054117

    申请日:2016-09-28

    IPC分类号: H03M1/08 H03M1/06 H03M1/00

    摘要: Disclosed herein are systems and methods that describe statistical estimation based noise reduction for SAR ADCs. For SAR ADCs, the conversion error can be available at the comparator input. Although a noisy 1-bit comparator may not be able to produce an accurate estimation for its input if used only once, the comparison can be repeated multiple times for a designated bit of the multi-bit SAR ADC. This can allow for the improvement of the estimation accuracy by examining the probability of the comparator output being "1" or "0". The estimation of a signal from a noisy environment using multiple trials can be cast as a classic. In one aspect of the disclosure, an optimal Bayes estimator is disclosed to achieve a low estimation error from the comparator on a designated bit of the multi-bit SAR ADC.

    摘要翻译: 这里公开了描述针对SAR ADC的基于噪声降低的统计估计的系统和方法。 对于SAR ADC,转换错误可在比较器输入端使用。 尽管如果只使用一次,噪声1比特比较器可能无法产生其输入的精确估计,所以可以对多位SAR ADC的指定位重复多次比较。 这可以通过检查比较器输出的概率为“1”或“0”来提高估计精度。 使用多次试验的嘈杂环境中的信号估计可以作为经典。 在本公开的一个方面,公开了一种最佳贝叶斯估计器,以在多位SAR ADC的指定位上从比较器获得低估计误差。

    INVERTER-BASED SUCCESSIVE APPROXIMATION CAPACITANCE-TO-DIGITAL CONVERTER
    2.
    发明申请
    INVERTER-BASED SUCCESSIVE APPROXIMATION CAPACITANCE-TO-DIGITAL CONVERTER 审中-公开
    基于逆变器的后置近似电容数字转换器

    公开(公告)号:WO2017046782A1

    公开(公告)日:2017-03-23

    申请号:PCT/IB2016/055590

    申请日:2016-09-19

    IPC分类号: G01R27/26 H03M1/10 H03M1/46

    摘要: An energy-efficient capacitance-to-digital converter (CDC) is provided that utilizes a capacitance-domain successive approximation (SAR) technique. Unlike SAR analog- to-digital converters (ADCs), analysis shows that for SAR CDCs, the comparator offset voltage will result in signal-dependent and parasitic-dependent conversion errors, which necessitates an op-amp-based implementation. The inverter-based SAR CDC contemplated herein provides robust, energy-efficient, and fast operation. The inverter- based SAR CDC may include a hybrid coarse-fine programmable capacitor array. The design of example embodiments is insensitive to analog references, and thus achieves very low temperature sensitivity without the need for calibration. Moreover, this design achieves improved energy efficiency.

    摘要翻译: 提供了一种利用电容域逐次逼近(SAR)技术的节能电容数字转换器(CDC)。 与SAR模数转换器(ADC)不同,分析表明,对于SAR CDC,比较器偏移电压将导致信号相关和寄生相关的转换误差,这就需要基于运算放大器的实现。 本文考虑的基于逆变器的SAR CDC提供了强大的,节能的和快速的操作。 基于逆变器的SAR CDC可以包括混合粗略可编程电容器阵列。 示例实施例的设计对模拟参考不敏感,因此在不需要校准的情况下实现非常低的温度灵敏度。 此外,该设计实现了能量效率的提高。

    CALIBRATION OF A SWITCHING INSTANT OF A SWITCH
    4.
    发明申请
    CALIBRATION OF A SWITCHING INSTANT OF A SWITCH 审中-公开
    开关开关瞬间的校准

    公开(公告)号:WO2014144166A1

    公开(公告)日:2014-09-18

    申请号:PCT/US2014/028458

    申请日:2014-03-14

    申请人: XILINX, INC.

    IPC分类号: H03M1/10 H03M1/74

    CPC分类号: H03M1/1009 H03M1/742

    摘要: An apparatus for calibration of a signal converter is disclosed. This apparatus includes a first digital-to-analog converter ("DAC") (510) and a calibration system (520) coupled to an output port of the first DAC (510). The calibration system includes a second DAC (602, 612). The calibration system (520) is configured to provide an adjustment signal responsive to a spurious spectral performance parameter in an output of the first DAC (510). The spurious spectral performance parameter is sensitive to a timing error associated with the first DAC (510). The calibration system (510) is coupled to provide the adjustment signal to the first DAC (510) to correct the timing error of the first DAC (510).

    摘要翻译: 公开了一种用于校准信号转换器的装置。 该装置包括耦合到第一DAC(510)的输出端口的第一数模转换器(“DAC”)510和校准系统520。 校准系统包括第二DAC(602,612)。 校准系统(520)被配置为响应于第一DAC(510)的输出中的寄生光谱性能参数提供调整信号。 寄生光谱性能参数对与第一DAC相关的定时误差敏感(510)。 校准系统(510)被耦合以向第一DAC(510)提供调整信号,以校正第一DAC(510)的定时误差。

    自校准电流源系统
    5.
    发明申请

    公开(公告)号:WO2014114004A1

    公开(公告)日:2014-07-31

    申请号:PCT/CN2013/071052

    申请日:2013-01-28

    发明人: 吴柯 刘松 杨飞琴

    IPC分类号: G05F1/56

    CPC分类号: G05F3/02 G05F1/561 H03M1/1009

    摘要: 本发明提供一种自校准电流源系统,其包括电流源,还包括:自校准电阻阵列,其以与所述电流源的内部电阻阵列关联的方式设置;比较器,其将所述自校准电阻阵列的电压与所述芯片的输出终端电阻的电压进行比较;控制模块,其接收所述比较器的比较结果,据此输出控制信号以控制自校准电阻阵列及与所述自校准电阻阵列关联的所述内部电阻阵列。本发明所述自校准电流源系统可进行自动调整以使内部电阻阵列的电阻与输出终端电阻的电阻相当。

    TIME- INTERLEAVED ANALOG-TO-DIGITAL CONVERTER SYSTEM
    6.
    发明申请
    TIME- INTERLEAVED ANALOG-TO-DIGITAL CONVERTER SYSTEM 审中-公开
    时间隔离的模拟数字转换器系统

    公开(公告)号:WO2008002214A1

    公开(公告)日:2008-01-03

    申请号:PCT/SE2006/000809

    申请日:2006-06-30

    IPC分类号: H03M1/12 H03M1/06 H03M1/08

    CPC分类号: H03M1/1009 H03M1/1215

    摘要: The invention provides a method and a module for estimating a plurality of relative channel-error d k , G k, C k for at least one signal X k with respect to a reference signal X 0 . The signals X 0 and X k are produced by an analog-to-digital module 10 comprising parallel and time interleaved analog-to-digital converters and are received by an estimation module 20. The method is performed by said estimation module 20 and it comprises the steps of: defining Sl a function F(d k ,G k ,C k ) representing a relationship between said reference signal X 0 and an arbitrary signal X k in said group of signals X 0 -X N-1 ; selecting S2 a first reference signal X 0 in said group of signals X 0 - X N-1 . The method comprises the further steps of: selecting S3 a second signal X k from the remaining signals X 1 - X N-1 in said group; and optimizing S4 the function F{d k , G k , C k ) so as to obtain an estimate d k , G k , C k of said plurality of relative channel-error d k , G k , C k ; repeating said further steps for each remaining signal X1 - X N-1 .

    摘要翻译: 本发明提供一种用于估计多个相对通道错误的方法和模块,用于至少一个 信号X 相对于参考信号X 0 <0>。 信号X 0和X k是由包括并行和时间交织的模数转换器的模数 - 数字模块10产生的,并由估计模块 该方法由所述估计模块20执行,并且其包括以下步骤:定义S1 a函数F(d,k,k,k, / SUB>),其表示所述参考信号X SUB和所述信号组X 0中的任意信号X < SUB> N-1 ; 在所述组信号X N-X N-1中选择S2第一参考信号X <0> 。 该方法还包括以下步骤:从所述组中的剩余信号X 1 -X N-1 中选择S3第二信号X SUB ; 并且优化S4的函数F(d,k,k,k,k),以获得估计值d k k, 所述多个相对信道误差d k,k,k,k,k,k, çķ; 对于每个剩余信号X1-X N-1重复进一步的步骤。

    基于逐次逼近算法的ADC自校正电路

    公开(公告)号:WO2018205359A1

    公开(公告)日:2018-11-15

    申请号:PCT/CN2017/089315

    申请日:2017-06-21

    IPC分类号: H03M1/16

    CPC分类号: H03M1/1009

    摘要: 本发明公开一种基于逐次逼近算法的ADC自校正电路,包括:编码电路、分压电阻串、比较器阵列、多路选择开关、第一数模转换器、基准电路、控制寄存器及数据寄存器,编码电路的输入端与比较器阵列的输出端相连,比较器阵列中每一比较器的正相输入端均与多路选择开关的动端相连,比较器阵列中每一比较器的反相输入端对应连接于分压电阻串中每两相邻的电阻之间,比较器阵列的使能端与控制寄存器相连,多路选择开关的第一不动端用于接收一模拟信号、第二不动端与第一数模转换器的输出端相连、控制端与控制寄存器相连,所述基准电路与分压电阻串及比较器阵列均相连,用于将分压电阻串的中间电平和电压范围校正到和第一数模转换器的输出一致。

    VOLTAGE MEASUREMENT CIRCUIT
    9.
    发明申请
    VOLTAGE MEASUREMENT CIRCUIT 审中-公开
    电压测量电路

    公开(公告)号:WO2017100738A1

    公开(公告)日:2017-06-15

    申请号:PCT/US2016/066089

    申请日:2016-12-12

    发明人: KUMAR, Ajay

    摘要: A method for measuring a voltage using a capacitive voltage divider (CVD) and an analog-to-digital converter includes the steps of measuring a bandgap or reference voltage and determining a first code value of the bandgap or reference voltage, charging a first capacitor to a voltage to be measured and determining a second code value of voltage of the first capacitor, charging a second capacitor to a second known voltage and determining a third code value of voltage of the second capacitor, and determining the voltage to be measured by applying the first, second, and third code values.

    摘要翻译: 使用电容分压器(CVD)和模数转换器来测量电压的方法包括以下步骤:测量带隙或参考电压并确定带隙的第一代码值或 将第一电容器充电到要测量的电压并确定第一电容器的电压的第二码值,将第二电容器充电到第二已知电压并确定第二电容器的电压的第三码值,以及确定 通过施加第一,第二和第三代码值来测量电压。

    SIGNAL PROCESSING SYSTEMS AND SIGNAL PROCESSING METHODS
    10.
    发明申请
    SIGNAL PROCESSING SYSTEMS AND SIGNAL PROCESSING METHODS 审中-公开
    信号处理系统和信号处理方法

    公开(公告)号:WO2017084705A1

    公开(公告)日:2017-05-26

    申请号:PCT/EP2015/077000

    申请日:2015-11-18

    IPC分类号: H03M1/66 G06G7/26 H03M1/10

    摘要: The invention relates to a signal processing system, comprising at least a first, a second and a third digital-to-analog converter (31-33) (DAC); a processing unit (21) configured for splitting a sampled signal into a first and a second signal corresponding to different frequency portions of the sampled signal, transmitting the first signal to the first DAC (31), splitting the second signal into a first and a second subsignal and transmitting the first subsignal to the second DAC (32) and the second subsignal to the third DAC (33), the first subsignal corresponding to the real part of the second signal and the second subsignal corresponding to the imaginary part of the second signal; an IQ mixer (600) configured for mixing an analog output signal of the second DAC (32) and an analog output signal of the third DAC (33) and a combiner (4) for combining an analog output signal of the first DAC (31) and an output signal of the IQ mixer (600). The invention further is related to methods of signal processing.

    摘要翻译: 信号处理系统技术领域本发明涉及信号处理系统,其至少包括第一,第二和第三数模转换器(DAC)(DAC)。 处理单元(21),被配置用于将采样信号分成对应于采样信号的不同频率部分的第一和第二信号,将第一信号发送到第一DAC(31),将第二信号分成第一和第二信号 第二子信号并且将第一子信号传输到第二DAC(32)并且将第二子信号传输到第三DAC(33),第一子信号对应于第二信号的实部并且第二子信号对应于第二DAC的虚部 信号; 被配置为混合第二DAC(32)的模拟输出信号和第三DAC(33)的模拟输出信号的IQ混频器(600);以及组合器(4),用于将第一DAC(31)的模拟输出信号 )和IQ混频器(600)的输出信号。 本发明还涉及信号处理的方法。