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A 800 µW 1 GHz Charge Pump Based Phase-Locked Loop in Submicron CMOS Process

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Demand of modern measurement systems in submicron CMOS process introduced new challenges in design of low power high frequency clock generation systems. Technical possibilities for clock generation using classical oscillator based on a quartz filter is limited to tens of megahertz. Thus, 1 GHz clock generation is not possible without a frequency multiplier system. It is difficult to achieve, because in submicron process, where the integration of analog and digital blocks poses serious challenges. The proposed solution is a low power charge pump phase-locked loop (CPPLL) with the center frequency of 1 GHz. It combines various modern circuit techniques, whose main aim is to lower power consumption, which is below 800µW for the whole PLL, while maintaining good noise properties, where the jitter rms is 8.87 ps. The proposed phase-locked loop is designed in 0.18 µm CMOS process.
  • Department of Measurement and Instrumentation, AGH University of Science and Technology, Cracow, Poland,
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