Low phase noise, high resolution digitally-controlled ring oscillator operating at 2.2GHz

International Conference on Modern Circuits and Systems Technologies, pp. 1–4

Abstract

A low power, high resolution, small area digitally-controlled oscillator (DCO) designed with TSMC 65nm CMOS technology is presented in this paper. The proposed design operates between the frequency range of 1.8 GHz and 2.2 GHz. The proposed system uses ring oscillator architecture with 4 stages of delay cell which is preferred due to its high stability and capability to operate with 6.10 kHz resolution. The active area of the DCO is 0.00037 mm2and power consumption varies between 0.6 mW and 1.6 mW for the supply voltage of 1.2 V. Monte Carlo simulation is performed, which gives a deviation of 7.4%, which proves the stability of the design.

Authors 3

1. Santthosh Selvaraj Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics, RWTH Aachen University, Aachen, Germany

2. Erkan Bayram Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics, RWTH Aachen University, Aachen, Germany

3. Renato Negra Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics, RWTH Aachen University, Aachen, Germany