Title :
A 12-bit digitally controlled oscillator with low power consumption
Author :
Zhao, Jun ; Kim, Yong-Bin
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA
Abstract :
In this paper, a low power and low jitter 12-bit CMOS digitally controlled oscillator (DCO) design is presented. The CMOS DCO is designed based on a ring oscillator implemented with Schmitt trigger based inverters. Simulations of the proposed DCO using 32 nm CMOS predictive transistor model (PTM) achieves controllable frequency range of 570 MHz~850 MHz with a wide linearity. Monte Carlo simulation demonstrates that the time-period jitter due to random power supply fluctuation is under 75 ps and the power consumption is 2.3 mW at 800 MHz with 0.9 V power supply.
Keywords :
CMOS integrated circuits; Monte Carlo methods; UHF oscillators; integrated circuit modelling; invertors; trigger circuits; CMOS predictive transistor model; Monte Carlo simulation; Schmitt trigger based inverters; digitally controlled oscillator; power 2.3 mW; power consumption; ring oscillator; size 32 nm; time-period jitter; voltage 0.9 V; word length 12 bit; Digital control; Energy consumption; Frequency; Inverters; Jitter; Power supplies; Predictive models; Ring oscillators; Semiconductor device modeling; Trigger circuits;
Conference_Titel :
Circuits and Systems, 2008. MWSCAS 2008. 51st Midwest Symposium on
Conference_Location :
Knoxville, TN
Print_ISBN :
978-1-4244-2166-4
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2008.4616813