Title :
Digitally-controlled cell-based oscillator with multi-phase differential outputs
Author :
Su, Ming-Chiuan ; Jou, Shyh-Jye
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A digitally-controlled oscillator (DCO) with multi-phase differential outputs is presented. The DCO uses ten stages differential delay cell so as to have 20 output phases. The DCO´s frequency tuning range covers 1GHz and 1.2GHz among different process corners. The DCO is designed and verified by 65nm CMOS technology. The simulated phase noise of the DCO is -96.25dBc/Hz at 1MHz offset from 1.2GHz center frequency. The power consumption is 7.4mW at 1.2GHz with 20 phases. The area is 120μm×90μm.
Keywords :
CMOS integrated circuits; UHF oscillators; circuit tuning; digital control; low-power electronics; phase noise; CMOS technology; differential delay cell; digitally controlled cell based oscillator; frequency 1 GHz to 1.2 GHz; frequency tuning; multiphase differential outputs; power 7.4 mW; power consumption; process corners; simulated phase noise; size 65 nm; CMOS integrated circuits; Loading; Signal resolution; System-on-a-chip; DCO; all-digital; differential; multi-phase;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157279
