Title :
1-V low-noise 200 MHz relaxation oscillator
Author :
Deval, Y. ; Tomas, J. ; Begueret, J.B. ; Lapuyade, H. ; Dom, J.P.
Author_Institution :
Université Bordeaux, Talence, France
Abstract :
This paper presents a high-frequency current-controlled relaxation oscillator designed for ultra-low voltage supply (0.9 V). The choosen relaxation oscillator topology provides both high frequency and low noise characteristic. Simulated results are verified by measurements on a full-custom integrated circuit. The tuning range extends from 1 to 180 MHz with supply current limited to 1.1 mA. At a 200 kHz off set from the oscillator frequency, the measured phase noise is-89 dBc/Hz.
Keywords :
Circuit optimization; Circuit simulation; Circuit topology; Current supplies; Frequency measurement; Integrated circuit measurements; Integrated circuit noise; Noise measurement; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 1997. ESSCIRC '97. Proceedings of the 23rd European
Conference_Location :
Southampton, UK
