Title :
A 5.8GHz LC-based digitally controlled oscillator with 20kHz frequency resolution and 37 % tuning range
Author :
El Waffaoui, Rachid ; Lee, Simon
Author_Institution :
NXP Semicond., Eindhoven, Netherlands
Abstract :
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.
Keywords :
CMOS integrated circuits; capacitor switching; circuit tuning; digital control; field effect MMIC; microwave oscillators; CMOS; DCO; LC-based digital controlled oscillator; current 4 mA; extended tuning range; fine frequency resolution; frequency 1800 MHz; frequency 5.8 GHz; fringe capacitor switching; phase noise; size 65 nm; voltage 1.8 V; Capacitors; Circuit optimization; Digital control; Frequency; Oscillators; Phase locked loops; Phase noise; Power dissipation; Tuning; Voltage;
Conference_Titel :
ESSCIRC, 2009. ESSCIRC '09. Proceedings of
Conference_Location :
Athens
Print_ISBN :
978-1-4244-4354-3
DOI :
10.1109/ESSCIRC.2009.5326004
