Title :
Wide frequency range voltage controlled ring oscillators based on transmission gates
Author :
Sheu, Meng-Lieh ; Lin, Ta-Wei ; Hsu, Wei-Hung
Author_Institution :
Dept. of Electr. Eng., Nat. Chi Nan Univ., Puli, Taiwan
Abstract :
In this paper, a voltage-controlled ring oscillator (VCO) with wide linear tuning frequency range capability, based on transmission gates, is described. It also features a rapid voltage swing and a 50% duty cycle independent of the control voltage. Fabricated in the TSMC 0.35 μm 1P4M, 3.3 V CMOS process, the VCO achieves an operating frequency range of 4.8 Hz to 256 MHz. The measured peak-to-peak and rms jitter are 41 ps and 5.8 ps while operating at 200 MHz.
Keywords :
CMOS integrated circuits; VHF oscillators; circuit tuning; voltage-controlled oscillators; 0.35 micron; 200 MHz; 3.3 V; 4.8 Hz to 256 MHz; CMOS; control voltage independent duty cycle; linear tuning frequency range; rapid voltage swing VCO; transmission gates; voltage controlled ring oscillators; wide frequency range VCO; Biomedical telemetry; CMOS technology; Energy consumption; Frequency; Immune system; Ring oscillators; Switches; Tuning; Voltage control; Voltage-controlled oscillators; transmission gate; voltage-controlled oscillator (VCO); wide frequency range;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465191
