Title of article :
A New Ring Oscillator with Dual Voltage/Current Control
Author/Authors :
Ahmadi Mostafa Department of ICT - Imam Hossein C. University - Tehran, Iran , Ghezel ayagh M.H Department of ICT - Imam Hossein C. University - Tehran, Iran , Yargholi M. Department of Electrical Engineering - University of Zanjan - Zanjan, Iran
Abstract :
A new Temperature compensated Ring Oscillator is presented. This CMOS ring oscillator consists of five current starved stage which is fed by a voltage and a current reference. In this paper a new method based on previous works has been proposed, in which required Temperature characteristic is imposed to the oscillator. The oscillation frequency of the proposed oscillator is 14.5 MHz and the simulation results in CMOS 0.18μm technology with a 1.8- V power supply showed that the temperature coefficient is 31.1 ppm/oC in the Temperature range of -15 ºC to 65 ºC. The total power consumption of circuit is 587 μW.
Keywords :
Voltage/current controlled ring oscillator , Voltage references , Current references , Temperature compensation , Fully integrated frequency reference
Journal title :
Majlesi Journal of Telecommunication Devices
