Title :
A 5.4GHz wide tuning range CMOS PLL using an auto-calibration multiple-pass ring oscillator
Author :
Lu, Ping ; Chen, Danfeng ; Ye, Fan ; Ren, Junyan
Author_Institution :
ASIC & Systme State Key Lab., Fudan Univ., Shanhai, China
Abstract :
A 5.4 GHz multiple-pass ring voltage controlled oscillator (VCO) based phase-locked loop (PLL) is described. For the sake of active devices´ sensitivity to process and temperature regarding ring oscillators, an effective automatic frequency calibration scheme is proposed. A new process-independent differential to single (DTOS) is used to adjust control voltage range and loop gain. The chip is implemented in 0.18-um CMOS process and achieves phase noise of -100 dBc/Hz@1MHz and a 40% tuning range.
Keywords :
CMOS analogue integrated circuits; phase locked loops; voltage-controlled oscillators; CMOS PLL; VCO; autocalibration multiple-pass ring oscillator; frequency 1 MHz; frequency 5.4 GHz; phase-locked loop; size 0.18 mum; voltage controlled oscillator; Automatic frequency control; CMOS process; Calibration; Phase locked loops; Phase noise; Ring oscillators; Temperature sensors; Tuning; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
SOC Conference, 2009. SOCC 2009. IEEE International
Conference_Location :
Belfast
Print_ISBN :
978-1-4244-4940-8
Electronic_ISBN :
978-1-4244-4941-5
DOI :
10.1109/SOCCON.2009.5398102
