A Self-Calibrated Multiphase DLL-Based Clock Generator

@article{Chen2007ASM,
  title={A Self-Calibrated Multiphase DLL-Based Clock Generator},
  author={Hsin-Shu Chen and Chao-Ching Hung},
  journal={2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)},
  year={2007},
  pages={1-4}
}
A delay-locked loop (DLL) Integrated with an analog self-calibration circuit is presented. The proposed DLL can generate precise multiphase clocks over process corners, voltage/temperature variations and device mismatches when incorporating with the calibration circuit and variable-delay output buffers. The experimental circuit in a standard 0.35-mum CMOS process demonstrates delay mismatch between phases can be reduced from tens of pico-second to less than ten pico-seconds at 100 MHz. The… CONTINUE READING
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