Title :
A BiCMOS 50-MHz voltage-controlled oscillator with quadrature outputs
Author :
Martin, Frederick L.
Author_Institution :
Motorola, Inc., Plantation, FL, USA
Abstract :
Design, analysis, and measured results are presented for a completely integrated voltage-controlled oscillator characterized over the range 25.6 to 76 MHz. The oscillator is based on a fully differential four-stage ring architecture with identical stages tuned via p-channel FETs operating in the linear region. Fabricated for 3.0 to 5.0 V operation in a 1.0-μm BiCMOS process, the circuit operates with power dissipation on the order of 3 mW and FM sideband noise below -80 dBc Hz at 25 kHz offset from the carrier. The intended application is in communications products, where tunability, well-characterized spectral characteristics, and quadrature signals are important
Keywords :
BiCMOS analogue integrated circuits; 1 micron; 25.6 to 76 MHz; 3 mW; 3 to 5 V; 50 MHz; BiCMOS; ECL; communications products; four-stage ring architecture; fully differential; p-channel FETs; power dissipation; quadrature outputs; tunability; voltage-controlled oscillator; BiCMOS integrated circuits; Circuit noise; Circuit optimization; Circuits and systems; FETs; Frequency; Power dissipation; Ring oscillators; Tunable circuits and devices; Voltage-controlled oscillators;
Conference_Titel :
Custom Integrated Circuits Conference, 1993., Proceedings of the IEEE 1993
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0826-3
DOI :
10.1109/CICC.1993.590804
