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A 5.8GHz LC-based digitally controlled oscillator with 20kHz frequency resolution and 37 % tuning range

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2 Author(s)
El Waffaoui, R. ; NXP Semicond., Eindhoven, Netherlands ; Lee, S.

This paper reports an LC-based digitally controlled oscillator (DCO) in 65 nm CMOS, key component in a digital phase locked loop, with an enhanced frequency resolution and extended tuning range. It has a center frequency of 5.8 GHz and a tuning range of 1800 MHz. The finest frequency step is about 20 kHz. The oscillator exhibits a phase noise of -100 dBc/Hz at 100 kHz frequency offset from 4.9 GHz. The DCO draws 4 mA current from 1.8 V supply.

Published in:

ESSCIRC, 2009. ESSCIRC '09. Proceedings of

Date of Conference:

14-18 Sept. 2009