A 6-bit Low Power Digitally Controlled Oscillator

Abstract

This paper focuses on high speed digitally controlled oscillators with supply regulated pseudo differential Ring Oscillators driven by 6-bit current steering digital to analog converter. A low-power, process independent variable frequency circuit is designed in Fully Depleted Silicon-On-Insulator(FDSOI) 22nm technology producing linear output frequency ranging from 1.15GHz to 3.35 GHz with a frequency resolution of 0.12 GHz for a variable supply voltage from 0.5V to 0.8V. It Consumes 0.58mW of power for a supply voltage of 800 mV at 3.35 GHz. The KVCO of the implemented design varies from 8.7 GHz to 8 GHz.