This paper reports a LC-based digitally controlled oscillator (DCO) with an enhanced frequency resolution and an extended linear frequency tuning range. It has a center frequency of 3.3GHz and a frequency tuning range of 600MHz covered by 64 different frequency bands. Each frequency band has 2048 linear tuning levels with a frequency step of 5kHz. This DCO was implemented in 90nm CMOS and the measured frequency tuning characteristics are provided in this paper. The DCO exhibits a phase noise of -118dBc/Hz at 1MHz frequency offset. The DCO core consumes 2mA current from 1.2V supply.

Additional Metadata
Persistent URL dx.doi.org/10.1109/ASSCC.2007.4425722
Conference 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC
Citation
Zhuang, J. (Jingcheng), Du, Q. (Qingjin), & Kwasniewski, T. (2007). A 3.3 GHz LC-based digitally controlled oscillator with 5kHz frequency resolution. Presented at the 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC. doi:10.1109/ASSCC.2007.4425722