公开(公告)号：US08604954B2

公开(公告)日：2013-12-10

申请号：US13596744

申请日：2012-08-28

申请人： Chun-Jen Chen ,  Tsung-Heng Tsai ,  Tzu-Yi Tang

发明人： Chun-Jen Chen ,  Tsung-Heng Tsai ,  Tzu-Yi Tang

IPC分类号： H03M1/10

CPC分类号： H03M1/1009 ,  H03M1/1215

摘要： A timing calibration circuit for a time-interleaved analog-to-digital converter (ADC) is provided. The timing calibration circuit includes a correlation unit, an adaptive filter and a delay cell. The correlation unit generates a first correlation coefficient according to a first zero-crossing possibility distribution between a first digital data and a second digital data, and generates a second correlation coefficient according to a second zero-crossing possibility distribution between the second digital data and a third digital data. The adaptive filter generates a predicted time skew according to a difference between the first correlation coefficient and the second correlation coefficient. The delay cell calibrates a clock signal of the ADC according to the predicted time skew.

摘要翻译： 提供了一种用于时间交织的模数转换器（ADC）的定时校准电路。 定时校准电路包括相关单元，自适应滤波器和延迟单元。 相关单元根据第一数字数据和第二数字数据之间的第一过零可能性分布产生第一相关系数，并且根据第二数字数据和第二数字数据之间的第二过零可能性分布产生第二相关系数 第三个数字数据。 自适应滤波器根据第一相关系数和第二相关系数之间的差产生预测的时间偏差。 延迟单元根据预测的时间偏差校准ADC的时钟信号。

公开(公告)号：US20130241755A1

公开(公告)日：2013-09-19

申请号：US13596744

申请日：2012-08-28

申请人： Chun-Jen Chen ,  Tsung-Heng Tsai ,  Tzu-Yi Tang

发明人： Chun-Jen Chen ,  Tsung-Heng Tsai ,  Tzu-Yi Tang

IPC分类号： H03M1/10

CPC分类号： H03M1/1009 ,  H03M1/1215

摘要： A timing calibration circuit for a time-interleaved analog-to-digital converter (ADC) is provided. The timing calibration circuit includes a correlation unit, an adaptive filter and a delay cell. The correlation unit generates a first correlation coefficient according to a first zero-crossing possibility distribution between a first digital data and a second digital data, and generates a second correlation coefficient according to a second zero-crossing possibility distribution between the second digital data and a third digital data. The adaptive filter generates a predicted time skew according to a difference between the first correlation coefficient and the second correlation coefficient. The delay cell calibrates a clock signal of the ADC according to the predicted time skew.

摘要翻译： 提供了一种用于时间交织的模数转换器（ADC）的定时校准电路。 定时校准电路包括相关单元，自适应滤波器和延迟单元。 相关单元根据第一数字数据和第二数字数据之间的第一过零可能性分布产生第一相关系数，并且根据第二数字数据和第二数字数据之间的第二过零可能性分布产生第二相关系数 第三个数字数据。 自适应滤波器根据第一相关系数和第二相关系数之间的差产生预测的时间偏差。 延迟单元根据预测的时间偏差来校准ADC的时钟信号。