基于参考信号注入的TIADC时间失配校准算法
发布时间：2018-07-20 08:45
【摘要】：提出了一种基于参考信号注入的TIADC时间失配后台校准算法。该校准算法统计通道间的参考信号过零点个数,比较相邻2个峰值的大小,计算得出误差系数,并将该误差系数反馈回时钟采样控制单元进行校正。采用Simulink软件建立12位5通道TIADC模型,仿真结果表明,当f_(in)/f_s≈0.040 3时,有效位数从8.1位提升到11.8位,验证了算法的可行性。算法中的时间失配误差提取与TIADC分开,并行处理,保证了输入信号在整个奈奎斯特频率范围内不受影响。该校准算法消耗资源少,易于硬件实现。
[Abstract]:A TIADC time mismatch background calibration algorithm based on reference signal injection is proposed. The calibration algorithm calculates the number of zero crossing points of reference signal between channels, compares the size of two adjacent peaks, calculates the error coefficient, and feedback the error coefficient back to the clock sampling control unit to correct the error coefficient. A 12-bit five-channel TIADC model is established by using Simulink software. The simulation results show that when f _ (in) / fs 鈮，
本文编号：2132930
[Abstract]:A TIADC time mismatch background calibration algorithm based on reference signal injection is proposed. The calibration algorithm calculates the number of zero crossing points of reference signal between channels, compares the size of two adjacent peaks, calculates the error coefficient, and feedback the error coefficient back to the clock sampling control unit to correct the error coefficient. A 12-bit five-channel TIADC model is established by using Simulink software. The simulation results show that when f _ (in) / fs 鈮，
本文编号：2132930
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