Sh33p Posted December 9, 2005 Report Share Posted December 9, 2005 hey guys, i'm new to this forum and was wondering if someone could help me on a quick analog cct design.i have a small AC signal with a bandwidth from 0.5-120Hz approximately, and it varies in magnitude from about 0.5mV to about 2mV.i need to create an amplifier circuit to give this a gain of about 300 or so. but obviously dealing with such a small signal, i need very low noise amplifier. i was recommended the AD820, AD822 (dual), and AD824 (quad) op amps as they are apparently precision, very low noise amplifiers.can someone help me with a design of the cct, no restraints other than it is battery powered, so low power requirements would be nice. thanks in adavnce Quote Link to comment Share on other sites More sharing options...
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