Title :
Temperature-stable VCO based on operational transconductance amplifiers
Author :
Chung, W.-S. ; Cha, H. -w ; Kim, K.-H.
Author_Institution :
Dept. of Semicond. Eng., Chongju Univ., South Korea
Abstract :
A VCO based on OTAs is described that achieves +or-60 ppm/ degrees C temperature coefficient of frequency over 30-90 degrees C at oscillation frequencies from 10 kHz to 40 kHz. The circuit also exhibits wide sweep capability and good linearity of voltage to frequency.
Keywords :
operational amplifiers; stability; variable-frequency oscillators; 10 to 40 kHz; 30 to 90 degC; OTA based oscillator; VCO; VFO; operational transconductance amplifiers; temperature stable;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901223
