Amplifier circuit uses the frequency to control the gain

Published:2011/5/16 9:07:00 Author:Christina | Keyword: Amplifier, frequency, gain | From:SeekIC

The amplifier circuit that uses the frequency to control the gain is as shown. Frequency gain control circuit uses the different input clock frequencies to control the amplifier gain. As the figure (a) shows, this circuit is composed of two parts: the analog switch and the integrated amp. The analog switch is composed of two pieces of the precise capacitance switch LTC1043; the integrated operational amplifier uses the JFET input op amp type LT1056.



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