Title :
A novel differential VCO circuit design for USB hub
Author :
Qian, Gong ; Guo-Shun, Yuan
Author_Institution :
Inst. of Microelectron., Chinese Acad. of Sci., Beijing, China
Abstract :
The paper describes a novel differential voltage controlled oscillator circuit, which is used in the phase locked loop of a USB hub chip. The output clock signals can be altered from 36MHz to 96MHz by changing the value of control signals. The voltage controlled oscillator architecture, module circuits of voltage controlled oscillator design, simulation results, and chip layout are included. Experimental results using CSMC 0.6μm process technology show that the anticipatory performance can be obtained and the voltage controlled oscillator circuit consumes only 0.9 mW from a 5V power supply.
Keywords :
circuit simulation; integrated circuit layout; phase locked loops; voltage-controlled oscillators; 0.6 micron; 0.9 mW; 36 to 96 MHz; 5 V; CSMC; USB hub chip; VCO circuit design; chip layout; clock signals; phase locked loop; Circuit synthesis; Clocks; Frequency; Inverters; Microelectronics; Phase locked loops; Ring oscillators; Universal Serial Bus; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Design Automation Conference, 2005. Proceedings of the ASP-DAC 2005. Asia and South Pacific
Print_ISBN :
0-7803-8736-8
DOI :
10.1109/ASPDAC.2005.1466561
