Title :
A 250-MHz monolithic voltage-controlled oscillator with low temperature coefficient
Author :
Liu, Ting-ping ; Meyer, Robert G.
fDate :
4/1/1990 12:00:00 AM
Abstract :
A monolithic voltage-controlled oscillator (VCO) with dual-loop feedback, designed and fabricated in a 2-μm oxide-isolated bipolar technology, is discussed. The VCO, consuming 220 mW from a single 5-V supply and occupying 2200 mil2, achieves a -65 p.p.m./°C temperature coefficient of frequency. It has a 5:1 frequency control range, and the maximum oscillation frequency is 250 MHz with better than a 2% voltage-to-frequency linearity. The modulation bandwidth of the VCO is greater than 12 MHz, and the power supply rejection ratio is 0.4%/V
Keywords :
bipolar integrated circuits; feedback; linear integrated circuits; radiofrequency oscillators; variable-frequency oscillators; 12 MHz; 2 micron; 220 mW; 250 MHz; 5 V; RF type; VHF; bipolar IC; dual-loop feedback; low temperature coefficient; monolithic VCO; oxide-isolated bipolar technology; single 5-V supply; voltage-controlled oscillator; Chirp modulation; Feedback loop; Frequency conversion; Frequency modulation; Linearity; Negative feedback; Stability; Temperature; Voltage; Voltage-controlled oscillators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
