theres a as ac sinewave signal with a 10 mV peak to peak. I want it to have a gain of 500 so it will have 5 Volts peak to peak. And the range of frequence that you can do this is from 0 to 100k Hz. Is there a chip you can use to do this. any circuit you guys can give me to do. is it posible to power this using a usb of a laptop? how can you convert the +5 volts of a usb to -5 volts. i need the negative voltage for the V- of the op amp.