Title :
Design of low-voltage wide tuning range CMOS multipass voltage-controlled ring oscillator
Author :
Ren, Jie ; El-Sankary, Kamal ; El-Masry, Ezz
Author_Institution :
Dept. of Elec. & Comp. Eng., Dalhousie Univ., Halifax, NS, Canada
Abstract :
This paper presents an 0.8-V power supply multi-pass loop ring oscillator. The oscillator employs cross-coupled PMOS transistors to improve phase noise characteristic and multi-pass loop to obtain wide frequency tuning range. The coarse and fine controlled signals are also applied to lower the noise sensitivity of the oscillator. Simulations using TSMC 90 nm CMOS technology shows 394MHz to 4.4GHz frequency tuning range and -94.6dBc/Hz at 1MHz offset from 4.4GHz. The power consumption is 11.2mW.
Keywords :
CMOS integrated circuits; MOSFET; low-power electronics; phase noise; tuning; voltage-controlled oscillators; TSMC; cross-coupled PMOS transistor; frequency 1 MHz; frequency 394 MHz to 4.4 GHz; frequency tuning; low-voltage wide tuning range CMOS; multipass loop ring oscillator; multipass voltage-controlled ring oscillator; noise sensitivity; phase noise characteristic; power 11.2 mW; size 90 nm; voltage 0.8 V; Circuit optimization; Delay; Frequency; Phase noise; Power supplies; Ring oscillators; Tail; Tuning; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-7771-5
DOI :
10.1109/MWSCAS.2010.5548573
