A novel all-digital PLL with software adaptive filter

@article{Xiu2004ANA,
  title={A novel all-digital PLL with software adaptive filter},
  author={Liming Xiu and Wen Li and Jason Meiners and Rajitha Padakanti},
  journal={IEEE Journal of Solid-State Circuits},
  year={2004},
  volume={39},
  pages={476-483}
}
The phase-locked loop (PLL) is one of the key building blocks of modern electronic designs. This paper presents a novel PLL structure that utilizes a "flying-adder" frequency synthesizer as its digital control oscillator (DCO), a software implemented adaptive IIR filter as its loop filter, and a unique counter as its phase detector. This all-digital PLL… CONTINUE READING