SYNCHRONOUS_AM_DETECTOR

Published:2009/7/16 2:24:00 Author:Jessie | From:SeekIC

Input signal is applied to multiplier section of Exar XR-S200 PLL IC with pins 5 and 7 grounded. Detector gain and demodulated output linearity are then determined by resistor connected between pins 10 and 11, in range of 1K to 10K for carrier amplitudes of 100 mV P-P or greater. Multiplier output can be low-pass filtered to obtain demodulated output, For typical 30% modulated input with 10-MHz carrier and 1-kHz modulation, output is clean 1-kHz sine wave.- Phase-Locked Loop Data Book, Exar Integrated Systems, Sunnyvale, CA, 1978, p 9-16.



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