THREE_INPUT_MIXER

Published:2009/6/29 23:46:00 Author:May | From:SeekIC

Motorola MC3401P or National LM3900 quad opamp serves for three input amplifiers each having adjustable gain range of 1 to about 11 and input impedance above about 100,000 ohms. Common outputs feed fourth opamp section connected as high-impedance amplifier. Maximum overall gain for mixeramplifier is about 300. Use well-filtered 9-15 V supply or battery capable of supplying 25 mA.-C. D. Rakes, Integrated Circuit Projects, Howard W. Sams, Indianapolis, IN, 1975, p 21-22.



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