FSK_GENERATOR_1

Published:2009/7/14 23:23:00 Author:Jessie | From:SeekIC

Digital programming capability of Exar XR-215 PLL IC is used to provide shifting of VCO frequency between mark and space frequencies by applying logic pulse to pin 10. Circuit gives 2.5 V P-P output at pin 15 and 1O V P-P output at pin 8, Each output is symmetrical square wave with second harmonic content less than 0.3%. - Phase-Locked Loop Data Book. Exar Integrated Systems, Sunnyvale, CA, 1978, p 21-28.



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