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METHOD AND APPARATUS FOR ESTIMATING SAMPLING DELAY ERROR BETWEEN FIRST AND SECOND ANALOG-TO-DIGITAL CONVERTERS OF TIME-INTERLEAVED ANALOG-TO-DIGITAL CONVERTER
METHOD AND APPARATUS FOR ESTIMATING SAMPLING DELAY ERROR BETWEEN FIRST AND SECOND ANALOG-TO-DIGITAL CONVERTERS OF TIME-INTERLEAVED ANALOG-TO-DIGITAL CONVERTER
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机译:估计时间交错的模数转换器的第一和第二模数转换器之间的采样延迟误差的方法和装置
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摘要
A method for estimating a sampling delay error between a first analog-to-digital converter (ADC) and a second ADC in a time-interleaved ADC includes: receiving a first digital output signal and a second digital output signal generated from the first ADC and the second ADC based on a same analog input signal, respectively; determining a delay amount according to a predetermined sampling delay between the first ADC and the second ADC and a delay adjusting value, and applying the delay amount delay to the second digital output signal to generate a delayed digital output signal, wherein the delay adjusting value Td is used to estimate the sampling delay error Te; calculating a difference between the first digital output signal and the delayed digital output signal; and feeding back the difference for adjusting the delay adjusting value Td according to the difference.
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