I am using an AD8055 in a circuit. The IC is currently being used as an non-inverting op-amp as in figure 38, page 12, of the AD8055 's datasheet. The input is from a tuned circuit (inductor and capacitor in parallel) and is at 200kHz with the peak to peak voltage being about 40mV. However, whenever the tuned circuit is connected to the op-amp, the output of the op-amp quickly "saturates" (and oscillates between +/- 3V) with an input voltage of only 40mV and a gain less than 10. Strangely enough, this oscillation does not occur at low gains (about +3). However, I require the op-amp to have a gain of about 100 eventually.
Could someone help me sort out this problem please?
Thanks for the help!