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Process-and-temperature compensated CMOS voltage-controlled oscillator for clock generators

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4 Author(s)
Soon-Seob Lee ; Dept. of Electron. Eng., Korea Univ., Seoul, South Korea ; Tae-Geun Kim ; Jae-Tack Yoo ; Soo-Won Kim

A voltage-controlled oscillator (VCO) with a current subtraction bias (CSB) for compensating the CMOS process-and-temperature variations is proposed and analysed. The design, fabrication, and testing of a clock generator with a VCO using CSB and conventional fixed bias (FB) is reported. Measurement results demonstrate that the frequency range of CSB selection has 36% reduction against that of FB selection and the temperature coefficient of 76% reduction.

Published in:
Electronics Letters  (Volume:39 ,  Issue: 21 )

Date of Publication: 16 Oct. 2003

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