A Digital Blind Adaptive Calibration Technique based on Timing Mismatch of Adjacent Channels in TIADC - Details

Author：

Liu, Sujuan (Liu, Sujuan.) | Deng, Zhiyue (Deng, Zhiyue.) | Li, Ze (Li, Ze.) | Zhou, Yuezhang (Zhou, Yuezhang.)

Indexed by：

EI Scopus

Abstract：

This　paper　presents　a　digital　blind　adaptive　calibration　technique　to　overcome　the　effect　of　timing　mismatch　in　time-interleaved　analog-to-digital　converters　(TIADCs).　By　subtracting　the　output　of　the　adjacent　channels,　utilizing　the　least-mean-square　(LMS)　algorithm,　the　timing　mismatch　is　determined　and　calibrated　by　the　differentiator-multiplier　cascade.　Simulation　results　of　the　two-channel　500MS/s　14-bit　TIADC　show　that　the　SFDR　can　be　improved　from　31.94dB　to　72.45dB.　This　approach　has　low-complexity　and　is　easy　to　implement.　©　2018　IEEE.

Keyword：

Timing circuits Analog to digital conversion Calibration

Author Community：

[ 1 ] [Liu, Sujuan]College of Microelectronics, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Deng, Zhiyue]College of Microelectronics, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Li, Ze]College of Microelectronics, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Zhou, Yuezhang]College of Microelectronics, Beijing University of Technology, Beijing; 100124, China