公开(公告)号：US20030189504A1

公开(公告)日：2003-10-09

申请号：US10384493

申请日：2003-03-06

Applicant: STMicroelectronics S.r.I.

Inventor： Vittorio Colonna ,  Andrea Baschirotto ,  Gabriele Gandolfi

IPC: H03M003/00

CPC classification number: H03M3/338 ,  H03M1/0663 ,  H03M3/464

Abstract: A sigma-delta-type converter comprises: a sigma-delta modulator having a digital output having a first prefixed bit number; a randomizer including a circular memory; an analogical reconstruction filter comprising a branch number equal to said first default number including sampling capacitors and a low-pass filter; characterized in that said circular memory comprises a number of elements equal to said first default number of bits less one and receives in input said first default number of bits less one, and in that a bit of said first default number of bits is applied to one of said branches of said reconstruction filter.

Abstract translation: Σ-Δ型转换器包括：具有第一前缀位数的数字输出的Σ-Δ调制器; 包括循环存储器的随机化器; 模拟重构滤波器，包括等于包括采样电容器和低通滤波器的所述第一默认数字的分支数; 其特征在于，所述循环存储器包括等于所述第一默认位数小于等于的数量的元素，并且在输入中接收所述第一默认位数少于1的元素，并且所述第一默认位数的位被应用于一个 的所述重建滤波器的分支。

公开(公告)号：US20040183625A1

公开(公告)日：2004-09-23

申请号：US10787819

申请日：2004-02-26

Applicant: STMicroelectronics S.r.I

Inventor： Andrea Baschirotto ,  Piertro Liguori ,  Vittorio Colonna ,  Gabriele Gandolfi

IPC: H03H007/00 ,  H03H011/00

CPC classification number: H03H11/1291 ,  H03H7/24 ,  H03H11/24

Abstract: A control system for the characteristic parameters of an active filter includes: a system for the determination of the technological distribution of the components that provides the information related to said technological distribution of the components; an elaboration system for said information related to said technological distribution of the components; an active filter including at least two programmable passive circuital elements receiving said information related to said technological distribution of the components; said elaboration system, being aware of the topology for said active filter, comprises means for determining the value for said at least two programmable passive circuital elements; means for correcting the value for said at least two programmable passive circuital elements according to the value of the information related to said technological distribution of the components; means for determining the programming values for said at least two programmable passive circuital elements.

Abstract translation: 用于有源滤波器的特征参数的控制系统包括：用于确定提供与组件的所述技术分布有关的信息的组件的技术分布的系统; 用于与所述组件的所述技术分布相关的所述信息的详细系统; 有源滤波器，包括至少两个可编程无源电路元件，其接收与所述组件的所述技术分布有关的所述信息; 所述精细化系统意识到所述有源滤波器的拓扑结构包括用于确定所述至少两个可编程无源电路元件的值的装置; 用于根据与所述组件的所述技术分布相关的信息的值来校正所述至少两个可编程无源电路元件的值的装置; 用于确定所述至少两个可编程无源电路元件的编程值的装置。

公开(公告)号：US20030149538A1

公开(公告)日：2003-08-07

申请号：US10329988

申请日：2002-12-26

Applicant: STMicroelectronics S.r.I.

Inventor： Gabriele Gandolfi ,  Andrea Baschirotto ,  Vittorio Colonna

IPC: G01R035/00

CPC classification number: H03M3/38 ,  H03M3/37 ,  H03M3/406

Abstract: A method of self-calibrating a modulator includes at least one integrator likely to incur a phase error may include reading a pulse response of the modulator, calculating a phase error parameter of the at least one integrator, and calibrating the phase error parameter. In addition, the calibration may provide a count of pulse response samples above suitable threshold values, as well as a change in the value of a capacitor associated with the integrator based upon the sample count.

Abstract translation: 自校准调制器的方法包括可能引起相位误差的至少一个积分器可以包括读取调制器的脉冲响应，计算至少一个积分器的相位误差参数，以及校准相位误差参数。 此外，校准可以提供高于合适阈值的脉冲响应样本的计数，以及基于样本计数与积分器相关联的电容器的值的变化。