48MHz HCMOS Oscillator

Published:2011/7/29 2:03:00 Author:Ecco | Keyword: 48MHz, HCMOS, Oscillator | From:SeekIC

The figure shows the 48MHzcrystal oscillator composed of HCMOS IC. The fundamental frequency of the crystal is l6MHz, butit works in the third harmonic oscillator by force. Harmonic oscillator suppresses the fundamental frequency of the crystal, the parallel resonant circuit in the figure resonances on the base frequenciesof crystal. Connecting to crystal SJT in series may have the highest impedance to fundamental frequency, which can effectively inhibit the fundamental frequency oscillations andensure the third harmonic being easy to start up.



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