SINGLE_FREQUENCY_CONTROL

Published:2009/7/6 21:50:00 Author:May | From:SeekIC

Adjustment range of over 1,ooo,ooo to 1 for frequency is achieved by using CA3080A as programmable current source,CA3160 opamp as voltage follower, and CA3080 variable opamp as high-speed capacitor. Variable capacitors C1-C3 shape triangle waveform between 500 kHz and 1 MHz. C4 and C5 with 50K trimmer in series with C5 maintain constant amplitude within 10% up to1 MHz,-''Circuit Ideas for RCA Linear ICs、″RCA Solid State Division,Somerville,NJ,1977,p 6.



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