公开(公告)号：US09154147B2

公开(公告)日：2015-10-06

申请号：US14209848

申请日：2014-03-13

Applicant: Integrated Device Technology, Inc.

Inventor： Arnaud Biallais ,  Fatima Ghanem

IPC: H03M1/06 ,  H03M1/12 ,  H03M1/08 ,  H03M1/10

CPC classification number: H03M1/0609 ,  H03M1/0607 ,  H03M1/08 ,  H03M1/109 ,  H03M1/121 ,  H03M1/1215

Abstract: The present disclosure relates to the field of background estimation in a time-interleaved analog-to-digital converter (ADC). More specifically, the present disclosure relates to systems and methods for background estimation of offset and gain errors in a time-interleaved ADC based on sample count. The error estimation unit of the time-interleaved ADC system includes a counting unit, a subtractor and an integrator. The method for estimating an offset error in a time-interleaved ADC includes determining signs of the signals and outputting corresponding values by the counting unit. The values are further compared and integrated to estimate the offset error. The method for estimating a gain error in a time-interleaved ADC includes determining the absolute values of the signals and comparing the absolute values with a predetermined threshold value. The comparison results are further integrated to estimate the gain error.

Abstract translation: 本公开涉及时间交织的模数转换器（ADC）中的背景估计领域。 更具体地，本公开涉及用于基于样本计数的时间交织ADC中的偏移和增益误差的背景估计的系统和方法。 时间交织的ADC系统的误差估计单元包括计数单元，减法器和积分器。 用于估计时间交替ADC中的偏移误差的方法包括确定信号的符号并由计数单元输出相应的值。 进一步比较和积分这些值以估计偏移误差。 用于估计时间交替ADC中的增益误差的方法包括确定信号的绝对值并将绝对值与预定阈值进行比较。 比较结果被进一步整合以估计增益误差。

公开(公告)号：US20140266823A1

公开(公告)日：2014-09-18

申请号：US14209848

申请日：2014-03-13

Applicant: Integrated Device Technology, Inc.

Inventor： Arnaud Biallais ,  Fatima Ghanem

IPC: H03M1/08

CPC classification number: H03M1/0609 ,  H03M1/0607 ,  H03M1/08 ,  H03M1/109 ,  H03M1/121 ,  H03M1/1215

Abstract: The present disclosure relates to the field of background estimation in a time-interleaved analog-to-digital converter (ADC). More specifically, the present disclosure relates to systems and methods for background estimation of offset and gain errors in a time-interleaved ADC based on sample count. The error estimation unit of the time-interleaved ADC system includes a counting unit, a subtractor and an integrator. The method for estimating an offset error in a time-interleaved ADC includes determining signs of the signals and outputting corresponding values by the counting unit. The values are further compared and integrated to estimate the offset error. The method for estimating a gain error in a time-interleaved ADC includes determining the absolute values of the signals and comparing the absolute values with a predetermined threshold value. The comparison results are further integrated to estimate the gain error.

Abstract translation: 本公开涉及时间交织的模数转换器（ADC）中的背景估计领域。 更具体地，本公开涉及用于基于样本计数的时间交织ADC中的偏移和增益误差的背景估计的系统和方法。 时间交织的ADC系统的误差估计单元包括计数单元，减法器和积分器。 用于估计时间交替ADC中的偏移误差的方法包括确定信号的符号并由计数单元输出相应的值。 进一步比较和积分这些值以估计偏移误差。 用于估计时间交替ADC中的增益误差的方法包括确定信号的绝对值并将绝对值与预定阈值进行比较。 比较结果被进一步整合以估计增益误差。