TLV2470 Shutdown

I am using the TLV2470 as a voltage follower with a 3k ohm load and a 1M ohm input resistor. When the input voltage changes by 100mV or more, I get an anomalous voltage spike on the output of the op amp. My circuit and some data are attached. Could the 1M ohm resistor at the input be a problem? Could the shutdown function be causing a problem?

0131.TLV2470 schematic and voltage vs time curves.pdf

Thanks,

Jeff Fedison,

Micro Circuit Labs