I've built a oscillator, using a 4Mhz, crystal. I want to amplify the 4 Mhz sine wave coming out of the crystal. I used a op amp buffer. Connecting the inverting input to the ouput, and the non-inverting input, to the output of my oscillator. To no avail will it amplify the signal, the output of the buffer looks nothing like my signal. Any suggestions for amplification of such a signal, and yes I'm using a high speed op amp.