Title :
A High Swing Low Power CMOS Differential Voltage-Controlled Ring Oscillator
Author :
De Paula, Luciano Severino ; Fabris, Eric ; Bampi, Sergio ; Susin, Altamiro Amadeu
Author_Institution :
Fed. Univ. of Rio Grande do Sul, Porto Alegre
Abstract :
This paper presents a two-stage CMOS differential voltage-controlled ring oscillator (VCO). The VCO is intended to operate as a frequency synthesizer in a PLL to generate local oscillator frequency (LO) for an acquisition system, providing in-phase/Q-phase outputs. This work proposes a differential VCO design that has a wide operating frequency tuning range with low power consumption, better phase-noise performance and good linearity between the frequency and control voltage. Simulation results verify the theoretical development and address the layout design. The circuit was designed and simulated in 0.18mum IBM CMOS technology
Keywords :
CMOS integrated circuits; circuit tuning; frequency synthesizers; integrated circuit layout; low-power electronics; phase locked loops; voltage-controlled oscillators; 0.18 micron; IBM CMOS technology; acquisition system; differential voltage-controlled ring oscillator; frequency synthesizer; frequency tuning range; in-phase/Q-phase outputs; layout design; local oscillator frequency; low power CMOS oscillator; phase locked loop; CMOS technology; Circuit optimization; Circuit simulation; Energy consumption; Frequency synthesizers; Local oscillators; Phase locked loops; Ring oscillators; Tuning; Voltage-controlled oscillators;
Conference_Titel :
VLSI, 2007. ISVLSI '07. IEEE Computer Society Annual Symposium on
Conference_Location :
Porto Alegre
Print_ISBN :
0-7695-2896-1
DOI :
10.1109/ISVLSI.2007.6
