A Wide Range CMOS VCO for PLL Applications

Author

Behera, A.P. ; Sasmal, Sudipta ; Nandi, Prabir

fYear

2013

fDate

5-10 Jan. 2013

Firstpage

163

Lastpage

168

Abstract

This paper describes a six phase differential wide range CMOS voltage controlled oscillator (VCO) designed for PLL applications. The VCO bias scheme includes a rail to rail operational trans-conductance amplifier (OTA), which enhances the useful control voltage range. A novel temperature compensation scheme is also proposed to minimize the temperature dependence of oscillation frequency. External trim bits are used to reduce frequency variation across process corners. Simulation results from a 65nm LP CMOS technology with supply voltage of 1.2V are also discussed. A wide frequency range from 1GHz to 4GHz is achieved.

Keywords

CMOS integrated circuits; operational amplifiers; phase locked loops; voltage-controlled oscillators; LP CMOS technology; PLL applications; VCO bias scheme; differential wide range CMOS VCO; frequency variation; operational transconductance amplifier; oscillation frequency; temperature compensation scheme; wide range CMOS voltage controlled oscillator; Computer architecture; Delay; Microprocessors; Rails; Temperature; Threshold voltage; Voltage-controlled oscillators; CMOS OTA; VCO Bias; Wide range VCO; temperature compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Design and 2013 12th International Conference on Embedded Systems (VLSID), 2013 26th International Conference on

Conference_Location

Pune

ISSN

1063-9667

Print_ISBN

978-1-4673-4639-9

Type

conf

DOI

10.1109/VLSID.2013.182

Filename

6472633