A Study on 4 and 16-bit CMOS Digitally Controlled Oscillators
Manoj Kumar and Nitin Kumar. Article: A Study on 4 and 16-bit CMOS Digitally Controlled Oscillators. IJCA Proceedings on National Workshop-Cum-Conference on Recent Trends in Mathematics and Computing 2011 RTMC(1):-, May 2012. Full text available. BibTeX
@article{key:article,
author = {Manoj Kumar and Nitin Kumar},
title = {Article: A Study on 4 and 16-bit CMOS Digitally Controlled Oscillators},
journal = {IJCA Proceedings on National Workshop-Cum-Conference on Recent Trends in Mathematics and Computing 2011},
year = {2012},
volume = {RTMC},
number = {1},
pages = {-},
month = {May},
note = {Full text available}
}
Abstract
A comparative study on 4 and 16-bit digitally controlled CMOS oscillator (DCO) in terms of output frequency is presented in this paper. DCO circuits have been simulated in SPICE with 0. 5?m technology with a 5V supply voltage. The structure of 4-bit DCO uses digital to analog converter and injection locked oscillator (ILO) circuits. The 16-bit DCO design is based on delay programmable differential latch with digital control scheme. The simulation results show that output frequency of 4-bit DCO varies from [3. 0772 to 3. 1181] GHz whereas 16-bit DCO shows frequency variation of [27. 379 to 106. 27] MHz.
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