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Design of phase frequency detector with improved output characteristics operating in the range of 1.25 MHz–3.8 GHz

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Abstract

In this paper, a CMOS based precharged phase frequency detector (PPFD) with improved output characteristic for phase locked loop (PLL) has been proposed and analyzed. The proposed PFD minimizes the reset time to improve the output characteristics and works upto the frequency of 1.25 MHz–3.8 GHz. In addition, it has an advantage of precharged PFD which has low power consumption capability i.e., 285.77 \(\upmu\) w. The design is based on standard 0.18 \(\upmu\) m CMOS process technology with the supply voltage of 1.8 V and achieves phase noise of \(-135.45\) dBc/Hz at 1 MHz offset. Further, the proposed design has minimized the Blind zone to 63 ps and has completely eliminated the dead zone in the phase characteristics. This is required for low noise phase locked loop (PLL) application.

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Notes

  1. Charge pump is the block used after the PFD in the PLL block.

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Acknowledgements

Authors would like to thank, Ministry of Electronics and Information Technology (MeitY) Govt. of India for providing financial support under SMDP-C2SD Project.

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Correspondence to Nigidita Pradhan.

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Pradhan, N., Jana, S.K. Design of phase frequency detector with improved output characteristics operating in the range of 1.25 MHz–3.8 GHz. Analog Integr Circ Sig Process 107, 101–108 (2021). https://doi.org/10.1007/s10470-020-01779-7

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  • DOI: https://doi.org/10.1007/s10470-020-01779-7

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