EXPANDER

Published:2009/6/29 23:40:00 Author:May | From:SeekIC

Uses Signetics dual-channel compandor IC; 571 has lower inherent distortion and higher supply voltage range (6-24 V) than 571 (6-18 V）. Values shown are for 15-V supply with either IC. Gain through expander is 1.43 VIN, where VIN is average input voltage. Unity gain occurs at RMS input level of 0.775V, or 0 dBm in 600-ohm systems.-W.G.Jung, Gain Control IC for Audio Signal Processing, Ham Radio, July 1977, p 47-53.



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