All-Digital Frequency Synthesizer Using a Flying Adder


This brief presents an all-digital frequency synthesizer based on the flying adder (FA) architecture. The FA is a fascinating architecture for frequency synthesizer designs due to its simplicity and effectiveness. The FA-based frequency synthesizer can simply use a set of multiple phase reference signals to generate a desired frequency to achieve fast frequency switching. In the proposed work, the frequency synthesizer adopts an all-digital phase-locked loop to provide a steady reference signal for the FA. The proposed frequency synthesizer is implemented in a standard 0.18-μm CMOS cell-based technology, and the core area is 0.16 mm. The output frequency range is 39.38–226 MHz, and the peak-to-peak jitter is less than 130 ps.

DOI: 10.1109/TCSII.2010.2056011

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@article{Sung2010AllDigitalFS, title={All-Digital Frequency Synthesizer Using a Flying Adder}, author={Gang-Neng Sung and Szu-Chia Liao and Jian-Ming Huang and Yu-Cheng Lu and Chua-Chin Wang}, journal={IEEE Trans. on Circuits and Systems}, year={2010}, volume={57-II}, pages={597-601} }