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A 2-to-2.4-GHz differentially-tuned fractional-N frequency synthesizer for DVB tuner applications

Meng Lingbu, Lu Lei, Zhao Wei and Tang Zhangwen

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Abstract: This paper describes the design of a fractional-N frequency synthesizer for digital video broadcasting-terrestrial (DVB-T) receivers. Transfer functions in differentially-tuned PLL are derived and loop parameters are designed. In addition, a fully-differential charge pump is presented. An 8/9 high speed prescaler is analyzed and the design considerations for the CML logic are also presented. Test results show that the RMS phase error is less than 0.7o in integer-N mode and less than 1o in fractional-N mode. The implemented frequency synthesizer draws 10 mA from a 1.8-V supply while occupying a die area of about 1-mm2 in a 0.18-μm CMOS process.

Key words: frequency synthesizerfully-differentialphase noisecharge pump压控振荡器

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    Received: 18 August 2015 Revised: 24 February 2010 Online: Published: 01 July 2010

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      Meng Lingbu, Lu Lei, Zhao Wei, Tang Zhangwen. A 2-to-2.4-GHz differentially-tuned fractional-N frequency synthesizer for DVB tuner applications[J]. Journal of Semiconductors, 2010, 31(7): 075007. doi: 10.1088/1674-4926/31/7/075007 Meng L B, Lu L, Zhao W, Tang Z W. A 2-to-2.4-GHz differentially-tuned fractional-N frequency synthesizer for DVB tuner applications[J]. J. Semicond., 2010, 31(7): 075007. doi:  10.1088/1674-4926/31/7/075007.Export: BibTex EndNote
      Citation:
      Meng Lingbu, Lu Lei, Zhao Wei, Tang Zhangwen. A 2-to-2.4-GHz differentially-tuned fractional-N frequency synthesizer for DVB tuner applications[J]. Journal of Semiconductors, 2010, 31(7): 075007. doi: 10.1088/1674-4926/31/7/075007

      Meng L B, Lu L, Zhao W, Tang Z W. A 2-to-2.4-GHz differentially-tuned fractional-N frequency synthesizer for DVB tuner applications[J]. J. Semicond., 2010, 31(7): 075007. doi:  10.1088/1674-4926/31/7/075007.
      Export: BibTex EndNote

      A 2-to-2.4-GHz differentially-tuned fractional-N frequency synthesizer for DVB tuner applications

      doi: 10.1088/1674-4926/31/7/075007
      • Received Date: 2015-08-18
      • Accepted Date: 2010-01-04
      • Revised Date: 2010-02-24
      • Published Date: 2010-07-05

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