Design of highly linear, 1GHz 8-bit digitally controlled ring oscillator with wide tuning range in 0.18um CMOS process

R. K. Pokharel, A. Tomar, H. Kanaya, K. Yoshida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper presents a simple architecture for 8-bit digital controlled oscillator (DCO) on 3-stages ring topology in TSMC 0.18um CMOS technology. A new schematic of tristate inverter is also proposed. The proposed tristate inverter has higher switching speed and low power consumption as compared to conventional one. The control digit changes the driving current that provides large tuning range from 316 MHz to 1165 MHz with very good linearity. The output voltage swing is always greater than 1.6V while the supply voltage is 1.8V. The proposed DCO has simulated phase noise of -114dBc/Hz @1MHz and 23.2mW power consumption at 1.0 GHz central frequency.

Original languageEnglish
Title of host publicationProceedings of 2008 China-Japan Joint Microwave Conference, CJMW 2008
Pages623-626
Number of pages4
DOIs
Publication statusPublished - Dec 1 2008
Event2008 China-Japan Joint Microwave Conference, CJMW 2008 - Shanghai, China
Duration: Sep 10 2008Sep 12 2008

Publication series

NameProceedings of 2008 China-Japan Joint Microwave Conference, CJMW 2008

Other

Other2008 China-Japan Joint Microwave Conference, CJMW 2008
CountryChina
CityShanghai
Period9/10/089/12/08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Pokharel, R. K., Tomar, A., Kanaya, H., & Yoshida, K. (2008). Design of highly linear, 1GHz 8-bit digitally controlled ring oscillator with wide tuning range in 0.18um CMOS process. In Proceedings of 2008 China-Japan Joint Microwave Conference, CJMW 2008 (pp. 623-626). [4772508] (Proceedings of 2008 China-Japan Joint Microwave Conference, CJMW 2008). https://doi.org/10.1109/CJMW.2008.4772508