A versatile monolithic 800 kHz to 800 MHz phase-startable oscillator

Author

Dobos, Laszlo ; Jensen, Brent

Author_Institution

Tektronix Inc., Beaverton, OR, USA

fYear

1994

fDate

1-4 May 1994

Firstpage

167

Lastpage

170

Abstract

A phase-startable voltage controlled oscillator is achieved that covers the frequency range of 800 kHz to 800 MHz using a modified multivibrator topology. The IC was fabricated on a recently developed highspeed complementary bipolar process (vertical NPN f_tau=9 GHz and vertical PNP f_τ=5.5 GHz). The IC operates from ±5 volt supplies, and provides linearly adjustable frequency over a 500:1 range as well as a linearly adjustable period over a 4:1 range. The design exhibits an extremely short startup transient time of two cycles for steady-state oscillation while still providing moderate phase noise performance of -110 dBc/Hz at 1 MHz distance from the 400 MHz carrier

Keywords

UHF integrated circuits; UHF oscillators; VHF oscillators; bipolar analogue integrated circuits; circuit tuning; integrated circuit noise; multivibrators; phase noise; radiofrequency oscillators; relaxation oscillators; variable-frequency oscillators; voltage-controlled oscillators; -5 V; 5 V; 800 kHz to 800 MHz; RF type; UHF; VHF; highspeed complementary bipolar process; linearly adjustable period; modified multivibrator topology; monolithic VCO; phase noise performance; phase-startable oscillator; startup transient time; steady-state oscillation; voltage controlled oscillator; Clamps; Feedback; Frequency; Phase noise; Schottky diodes; Switches; Timing; Topology; Voltage; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994

Conference_Location

San Diego, CA

Print_ISBN

0-7803-1886-2

Type

conf

DOI

10.1109/CICC.1994.379744

Filename

379744