I'm using a ADA4528-2 as a non-inverting buffer (single sided, 5V). I'm seeing a 200mV Pk-Pk 120kHz oscillation when a constant DC voltage is applied to the +IN pin. My initial circuit contained a 47 ohm resistor to isolate the circuit from any capacitive loading. I was able to eliminate the oscillation by incrementally increasing the resistor value to 1k ohm. This circuit feeds a op amp based current source with a input capacitance of 1uF.
Can you shed some light on why this oscillation occurs? Additionally can you suggest a alternate low power/low noise op amp that my be less sensitive to capacitive loading?