A 4.6-GHz, 15-mW frequency synthesizer CMOS ASIC with milli-hertz frequency resolution for miniature atomic clocks

In this paper, a 4.6 GHz frequency synthesizer integrated circuit for Cesium-based miniature atomic clocks is presented. Based on a fractional-N phase-locked loop (PLL) with sigma-delta modulator, the chip features a frequency resolution below 10E-3 Hz at its output, allowing a tuning resolution of 10E-13. This value was measured on the circuit which is integrated into a 130 nm CMOS process. It consumes 15 mW, features an output phase noise of -76 dBc/Hz @ 1 kHz offset from the 4.6 GHz carrier, and provides a programmable output power from -10 to 0 dBm.


Published in:
Proceedings of the 2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum (FCS), 1, 1-4
Presented at:
2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum (FCS), San Francisco, 2-5 May 2011
Year:
2011
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-61284-111-3
Keywords:
Laboratories:




 Record created 2011-11-04, last modified 2018-04-30


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